Finding the Fourth Proportional to 371,534,943.78, 512,687,898.12 and 218,747,342.91
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Solution
The fourth proportional to 371,534,943.78, 512,687,898.12 and 218,747,342.91 is: 301,853,479.28
Step by Step Solution
- Step 1: Write the proportion equation
371,534,943.78 : 512,687,898.12 = 218,747,342.91 : x - Step 2: Convert to fraction form
371,534,943.78/512,687,898.12 = 218,747,342.91/x - Step 3: Cross multiply
371,534,943.78x = 512,687,898.12 × 218,747,342.91 - Step 4: Simplify right side
371,534,943.78x = 112,149,115,455,862,784 - Step 5: Solve for x
x = 112,149,115,455,862,784/371,534,943.78 - Step 6: Final answer
x = 301,853,479.28
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.