Finding the Fourth Proportional to 304,918,438.72, 420,785,966.82 and 172,759,175.68
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Solution
The fourth proportional to 304,918,438.72, 420,785,966.82 and 172,759,175.68 is: 238,406,824.69
Step by Step Solution
- Step 1: Write the proportion equation
304,918,438.72 : 420,785,966.82 = 172,759,175.68 : x - Step 2: Convert to fraction form
304,918,438.72/420,785,966.82 = 172,759,175.68/x - Step 3: Cross multiply
304,918,438.72x = 420,785,966.82 × 172,759,175.68 - Step 4: Simplify right side
304,918,438.72x = 72,694,636,765,535,040 - Step 5: Solve for x
x = 72,694,636,765,535,040/304,918,438.72 - Step 6: Final answer
x = 238,406,824.69
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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.