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Finding the Fourth Proportional to 266,808.31, 400,182.86 and 67,128.73

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Solution

The fourth proportional to 266,808.31, 400,182.86 and 67,128.73 is: 100,685.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,808.31 : 400,182.86 = 67,128.73 : x
  2. Step 2: Convert to fraction form
    266,808.31/400,182.86 = 67,128.73/x
  3. Step 3: Cross multiply
    266,808.31x = 400,182.86 × 67,128.73
  4. Step 4: Simplify right side
    266,808.31x = 26,863,766,326.93
  5. Step 5: Solve for x
    x = 26,863,766,326.93/266,808.31
  6. Step 6: Final answer
    x = 100,685.64

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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.