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Finding the Fourth Proportional to 261,737.73, 392,633.91 and 72,198.14

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Solution

The fourth proportional to 261,737.73, 392,633.91 and 72,198.14 is: 108,304.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,737.73 : 392,633.91 = 72,198.14 : x
  2. Step 2: Convert to fraction form
    261,737.73/392,633.91 = 72,198.14/x
  3. Step 3: Cross multiply
    261,737.73x = 392,633.91 × 72,198.14
  4. Step 4: Simplify right side
    261,737.73x = 28,347,436,039.76
  5. Step 5: Solve for x
    x = 28,347,436,039.76/261,737.73
  6. Step 6: Final answer
    x = 108,304.74

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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.