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Finding the Fourth Proportional to 253,078.92, 379,644.30 and 95,439.96

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Solution

The fourth proportional to 253,078.92, 379,644.30 and 95,439.96 is: 143,169.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,078.92 : 379,644.30 = 95,439.96 : x
  2. Step 2: Convert to fraction form
    253,078.92/379,644.30 = 95,439.96/x
  3. Step 3: Cross multiply
    253,078.92x = 379,644.30 × 95,439.96
  4. Step 4: Simplify right side
    253,078.92x = 36,233,236,806.23
  5. Step 5: Solve for x
    x = 36,233,236,806.23/253,078.92
  6. Step 6: Final answer
    x = 143,169.71

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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.