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Finding the Fourth Proportional to 221,781.22, 332,920.50 and 88,754.20

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Solution

The fourth proportional to 221,781.22, 332,920.50 and 88,754.20 is: 133,230.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,781.22 : 332,920.50 = 88,754.20 : x
  2. Step 2: Convert to fraction form
    221,781.22/332,920.50 = 88,754.20/x
  3. Step 3: Cross multiply
    221,781.22x = 332,920.50 × 88,754.20
  4. Step 4: Simplify right side
    221,781.22x = 29,548,092,641.10
  5. Step 5: Solve for x
    x = 29,548,092,641.10/221,781.22
  6. Step 6: Final answer
    x = 133,230.81

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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.