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Finding the Fourth Proportional to 515,552.97, 773,144.91 and 178,503.15

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Solution

The fourth proportional to 515,552.97, 773,144.91 and 178,503.15 is: 267,690.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,552.97 : 773,144.91 = 178,503.15 : x
  2. Step 2: Convert to fraction form
    515,552.97/773,144.91 = 178,503.15/x
  3. Step 3: Cross multiply
    515,552.97x = 773,144.91 × 178,503.15
  4. Step 4: Simplify right side
    515,552.97x = 138,008,801,841.47
  5. Step 5: Solve for x
    x = 138,008,801,841.47/515,552.97
  6. Step 6: Final answer
    x = 267,690.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.