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Finding the Fourth Proportional to 266,809.31, 400,184.36 and 67,129.73

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Solution

The fourth proportional to 266,809.31, 400,184.36 and 67,129.73 is: 100,687.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,809.31 : 400,184.36 = 67,129.73 : x
  2. Step 2: Convert to fraction form
    266,809.31/400,184.36 = 67,129.73/x
  3. Step 3: Cross multiply
    266,809.31x = 400,184.36 × 67,129.73
  4. Step 4: Simplify right side
    266,809.31x = 26,864,268,037.02
  5. Step 5: Solve for x
    x = 26,864,268,037.02/266,809.31
  6. Step 6: Final answer
    x = 100,687.15

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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.