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Finding the Fourth Proportional to 221,695.20, 332,445.60 and 88,531.20

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Solution

The fourth proportional to 221,695.20, 332,445.60 and 88,531.20 is: 132,757.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,695.20 : 332,445.60 = 88,531.20 : x
  2. Step 2: Convert to fraction form
    221,695.20/332,445.60 = 88,531.20/x
  3. Step 3: Cross multiply
    221,695.20x = 332,445.60 × 88,531.20
  4. Step 4: Simplify right side
    221,695.20x = 29,431,807,902.72
  5. Step 5: Solve for x
    x = 29,431,807,902.72/221,695.20
  6. Step 6: Final answer
    x = 132,757.98

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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.