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Finding the Fourth Proportional to 221,520.93, 332,211.68 and 71,726.61

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Solution

The fourth proportional to 221,520.93, 332,211.68 and 71,726.61 is: 107,567.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,520.93 : 332,211.68 = 71,726.61 : x
  2. Step 2: Convert to fraction form
    221,520.93/332,211.68 = 71,726.61/x
  3. Step 3: Cross multiply
    221,520.93x = 332,211.68 × 71,726.61
  4. Step 4: Simplify right side
    221,520.93x = 23,828,418,764.94
  5. Step 5: Solve for x
    x = 23,828,418,764.94/221,520.93
  6. Step 6: Final answer
    x = 107,567.35

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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.