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Finding the Fourth Proportional to 221,781.72, 332,921.26 and 88,754.70

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Solution

The fourth proportional to 221,781.72, 332,921.26 and 88,754.70 is: 133,231.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,781.72 : 332,921.26 = 88,754.70 : x
  2. Step 2: Convert to fraction form
    221,781.72/332,921.26 = 88,754.70/x
  3. Step 3: Cross multiply
    221,781.72x = 332,921.26 × 88,754.70
  4. Step 4: Simplify right side
    221,781.72x = 29,548,326,554.92
  5. Step 5: Solve for x
    x = 29,548,326,554.92/221,781.72
  6. Step 6: Final answer
    x = 133,231.57

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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.