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Finding the Fourth Proportional to 202,439.70, 303,909.15 and 127,559.70

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Solution

The fourth proportional to 202,439.70, 303,909.15 and 127,559.70 is: 191,496.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,439.70 : 303,909.15 = 127,559.70 : x
  2. Step 2: Convert to fraction form
    202,439.70/303,909.15 = 127,559.70/x
  3. Step 3: Cross multiply
    202,439.70x = 303,909.15 × 127,559.70
  4. Step 4: Simplify right side
    202,439.70x = 38,766,560,001.26
  5. Step 5: Solve for x
    x = 38,766,560,001.26/202,439.70
  6. Step 6: Final answer
    x = 191,496.83

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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.