Finding the Fourth Proportional to 319,436,117.75, 440,822,137.24 and 172,758,401.75
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Solution
The fourth proportional to 319,436,117.75, 440,822,137.24 and 172,758,401.75 is: 238,406,753.82
Step by Step Solution
- Step 1: Write the proportion equation
319,436,117.75 : 440,822,137.24 = 172,758,401.75 : x - Step 2: Convert to fraction form
319,436,117.75/440,822,137.24 = 172,758,401.75/x - Step 3: Cross multiply
319,436,117.75x = 440,822,137.24 × 172,758,401.75 - Step 4: Simplify right side
319,436,117.75x = 76,155,727,886,919,552 - Step 5: Solve for x
x = 76,155,727,886,919,552/319,436,117.75 - Step 6: Final answer
x = 238,406,753.82
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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.