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Finding the Fourth Proportional to 272,545.87, 408,787.65 and 72,881.82

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Solution

The fourth proportional to 272,545.87, 408,787.65 and 72,881.82 is: 109,314.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,545.87 : 408,787.65 = 72,881.82 : x
  2. Step 2: Convert to fraction form
    272,545.87/408,787.65 = 72,881.82/x
  3. Step 3: Cross multiply
    272,545.87x = 408,787.65 × 72,881.82
  4. Step 4: Simplify right side
    272,545.87x = 29,793,187,925.52
  5. Step 5: Solve for x
    x = 29,793,187,925.52/272,545.87
  6. Step 6: Final answer
    x = 109,314.40

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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.