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Finding the Fourth Proportional to 266,402.25, 399,800.61 and 126,161.28

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Solution

The fourth proportional to 266,402.25, 399,800.61 and 126,161.28 is: 189,335.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,402.25 : 399,800.61 = 126,161.28 : x
  2. Step 2: Convert to fraction form
    266,402.25/399,800.61 = 126,161.28/x
  3. Step 3: Cross multiply
    266,402.25x = 399,800.61 × 126,161.28
  4. Step 4: Simplify right side
    266,402.25x = 50,439,356,702.38
  5. Step 5: Solve for x
    x = 50,439,356,702.38/266,402.25
  6. Step 6: Final answer
    x = 189,335.33

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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.