In [35]:
A1 = 24
H1 = 4
A2 = 34
A3 = 44
WX2 = 3
WX3 = 2

In [36]:
w1 = A1/H1
w3 = w1 + WX2 + WX3
h3 = A3/w3

In [37]:
h3


Out[37]:
4.0