Finding the Fourth Proportional to 207,917,640.74, 286,928,611.71 and 115,099,698.62
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Solution
The fourth proportional to 207,917,640.74, 286,928,611.71 and 115,099,698.62 is: 158,838,839.34
Step by Step Solution
- Step 1: Write the proportion equation
207,917,640.74 : 286,928,611.71 = 115,099,698.62 : x - Step 2: Convert to fraction form
207,917,640.74/286,928,611.71 = 115,099,698.62/x - Step 3: Cross multiply
207,917,640.74x = 286,928,611.71 × 115,099,698.62 - Step 4: Simplify right side
207,917,640.74x = 33,025,396,733,561,704 - Step 5: Solve for x
x = 33,025,396,733,561,704/207,917,640.74 - Step 6: Final answer
x = 158,838,839.34
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.