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Finding the Fourth Proportional to 488,565.80, 732,885.15 and 172,981.70

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Solution

The fourth proportional to 488,565.80, 732,885.15 and 172,981.70 is: 259,485.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,565.80 : 732,885.15 = 172,981.70 : x
  2. Step 2: Convert to fraction form
    488,565.80/732,885.15 = 172,981.70/x
  3. Step 3: Cross multiply
    488,565.80x = 732,885.15 × 172,981.70
  4. Step 4: Simplify right side
    488,565.80x = 126,775,719,151.76
  5. Step 5: Solve for x
    x = 126,775,719,151.76/488,565.80
  6. Step 6: Final answer
    x = 259,485.46

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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.