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Finding the Fourth Proportional to 266,781.71, 400,143.08 and 67,102.18

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Solution

The fourth proportional to 266,781.71, 400,143.08 and 67,102.18 is: 100,645.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,781.71 : 400,143.08 = 67,102.18 : x
  2. Step 2: Convert to fraction form
    266,781.71/400,143.08 = 67,102.18/x
  3. Step 3: Cross multiply
    266,781.71x = 400,143.08 × 67,102.18
  4. Step 4: Simplify right side
    266,781.71x = 26,850,472,979.91
  5. Step 5: Solve for x
    x = 26,850,472,979.91/266,781.71
  6. Step 6: Final answer
    x = 100,645.85

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1.5x scale

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.