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Finding the Fourth Proportional to 266,502.90, 399,171.15 and 231,510.90

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Solution

The fourth proportional to 266,502.90, 399,171.15 and 231,510.90 is: 346,759.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,502.90 : 399,171.15 = 231,510.90 : x
  2. Step 2: Convert to fraction form
    266,502.90/399,171.15 = 231,510.90/x
  3. Step 3: Cross multiply
    266,502.90x = 399,171.15 × 231,510.90
  4. Step 4: Simplify right side
    266,502.90x = 92,412,472,190.54
  5. Step 5: Solve for x
    x = 92,412,472,190.54/266,502.90
  6. Step 6: Final answer
    x = 346,759.72

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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.