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Finding the Fourth Proportional to 381,737.80, 572,606.70 and 328,083.40

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Solution

The fourth proportional to 381,737.80, 572,606.70 and 328,083.40 is: 492,125.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,737.80 : 572,606.70 = 328,083.40 : x
  2. Step 2: Convert to fraction form
    381,737.80/572,606.70 = 328,083.40/x
  3. Step 3: Cross multiply
    381,737.80x = 572,606.70 × 328,083.40
  4. Step 4: Simplify right side
    381,737.80x = 187,862,752,998.78
  5. Step 5: Solve for x
    x = 187,862,752,998.78/381,737.80
  6. Step 6: Final answer
    x = 492,125.10

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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.