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Finding the Fourth Proportional to 266,753.87, 399,686.56 and 187,702.02

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Solution

The fourth proportional to 266,753.87, 399,686.56 and 187,702.02 is: 281,240.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,753.87 : 399,686.56 = 187,702.02 : x
  2. Step 2: Convert to fraction form
    266,753.87/399,686.56 = 187,702.02/x
  3. Step 3: Cross multiply
    266,753.87x = 399,686.56 × 187,702.02
  4. Step 4: Simplify right side
    266,753.87x = 75,021,974,678.85
  5. Step 5: Solve for x
    x = 75,021,974,678.85/266,753.87
  6. Step 6: Final answer
    x = 281,240.44

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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.