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Finding the Fourth Proportional to 266,951.40, 399,843.90 and 207,319.20

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Solution

The fourth proportional to 266,951.40, 399,843.90 and 207,319.20 is: 310,525.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,951.40 : 399,843.90 = 207,319.20 : x
  2. Step 2: Convert to fraction form
    266,951.40/399,843.90 = 207,319.20/x
  3. Step 3: Cross multiply
    266,951.40x = 399,843.90 × 207,319.20
  4. Step 4: Simplify right side
    266,951.40x = 82,895,317,472.88
  5. Step 5: Solve for x
    x = 82,895,317,472.88/266,951.40
  6. Step 6: Final answer
    x = 310,525.88

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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.