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Finding the Fourth Proportional to 221,472.57, 332,187.79 and 88,317.21

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Solution

The fourth proportional to 221,472.57, 332,187.79 and 88,317.21 is: 132,467.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,472.57 : 332,187.79 = 88,317.21 : x
  2. Step 2: Convert to fraction form
    221,472.57/332,187.79 = 88,317.21/x
  3. Step 3: Cross multiply
    221,472.57x = 332,187.79 × 88,317.21
  4. Step 4: Simplify right side
    221,472.57x = 29,337,898,808.87
  5. Step 5: Solve for x
    x = 29,337,898,808.87/221,472.57
  6. Step 6: Final answer
    x = 132,467.41

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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.