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Finding the Fourth Proportional to 221,689.71, 332,473.95 and 79,508.61

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Solution

The fourth proportional to 221,689.71, 332,473.95 and 79,508.61 is: 119,241.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,689.71 : 332,473.95 = 79,508.61 : x
  2. Step 2: Convert to fraction form
    221,689.71/332,473.95 = 79,508.61/x
  3. Step 3: Cross multiply
    221,689.71x = 332,473.95 × 79,508.61
  4. Step 4: Simplify right side
    221,689.71x = 26,434,541,625.71
  5. Step 5: Solve for x
    x = 26,434,541,625.71/221,689.71
  6. Step 6: Final answer
    x = 119,241.18

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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.