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Finding the Fourth Proportional to 266,207.76, 399,787.56 and 255,505.20

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Solution

The fourth proportional to 266,207.76, 399,787.56 and 255,505.20 is: 383,714.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,207.76 : 399,787.56 = 255,505.20 : x
  2. Step 2: Convert to fraction form
    266,207.76/399,787.56 = 255,505.20/x
  3. Step 3: Cross multiply
    266,207.76x = 399,787.56 × 255,505.20
  4. Step 4: Simplify right side
    266,207.76x = 102,147,800,475.31
  5. Step 5: Solve for x
    x = 102,147,800,475.31/266,207.76
  6. Step 6: Final answer
    x = 383,714.59

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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.