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Finding the Fourth Proportional to 266,434.88, 399,617.76 and 126,282.56

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Solution

The fourth proportional to 266,434.88, 399,617.76 and 126,282.56 is: 189,407.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,434.88 : 399,617.76 = 126,282.56 : x
  2. Step 2: Convert to fraction form
    266,434.88/399,617.76 = 126,282.56/x
  3. Step 3: Cross multiply
    266,434.88x = 399,617.76 × 126,282.56
  4. Step 4: Simplify right side
    266,434.88x = 50,464,753,754.27
  5. Step 5: Solve for x
    x = 50,464,753,754.27/266,434.88
  6. Step 6: Final answer
    x = 189,407.46

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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.