ActionScript 3.0 :: Calculate Positions And Scales?

For some reason the "scaled.width" - the movieclip that have scaled already - after scaling it even more with TweenLite.to function by factor .3 aren't equal with the predicted result => scaled.width * .3. Orginal width is something I don't know but scaled width is something like 420. Now multiplying it by factor .3 the result should be something like 140, now when I put TweenLite.to function to scale my scaled movieclip by factor .3 the width in the end is something like 267.And frankly speakin I really can't imagine where the result came from.

Some back ground:I import three images dynamically. Each of them to their own MovieClip containers. I don't know the dimensions of images so I need to scale them proportionally to their dimensions to fit to the desired size.That was intuitively easy. I managed also to align them horizontally in the center of the screen after the first scaling by the knowledge that their registration point can be found from the top left corner. I also managed to align each of them on vertically in the middle of the 1/3 part of the empty stage with desired marginals: in the top there are 20 pixels space, between the images there are 20 pixels space and in the bottom there are 20 pixels space.

Now the problems comes when I need to tween them to their final positions. Each of them to the top of the stage and each of them in 1/3 part of the empty space horizontally scaled at the same time smaller with factor .3.Intuitively when I think the x position can be found by same way than the way I found y positions (related to the space left after the middle image is positioned). So in theory I thought the x position for the image that comes in the center should be as much as finalX = stage.stageWidth / 2 - current.width * .3 / 2(the center point of the stage minus the half of the width of the image after the scale)but when I give finalX for the tweenLite as a x position and .3 as a scaling factor the result is something different.