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Finding the Fourth Proportional to 387,265.38, 580,482.76 and 187,310.70

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Solution

The fourth proportional to 387,265.38, 580,482.76 and 187,310.70 is: 280,765.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,265.38 : 580,482.76 = 187,310.70 : x
  2. Step 2: Convert to fraction form
    387,265.38/580,482.76 = 187,310.70/x
  3. Step 3: Cross multiply
    387,265.38x = 580,482.76 × 187,310.70
  4. Step 4: Simplify right side
    387,265.38x = 108,730,631,176.98
  5. Step 5: Solve for x
    x = 108,730,631,176.98/387,265.38
  6. Step 6: Final answer
    x = 280,765.17

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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.