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Finding the Fourth Proportional to 289,874.92, 399,414.18 and 269,928.04

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Solution

The fourth proportional to 289,874.92, 399,414.18 and 269,928.04 is: 371,929.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,874.92 : 399,414.18 = 269,928.04 : x
  2. Step 2: Convert to fraction form
    289,874.92/399,414.18 = 269,928.04/x
  3. Step 3: Cross multiply
    289,874.92x = 399,414.18 × 269,928.04
  4. Step 4: Simplify right side
    289,874.92x = 107,813,086,755.61
  5. Step 5: Solve for x
    x = 107,813,086,755.61/289,874.92
  6. Step 6: Final answer
    x = 371,929.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.