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Finding the Fourth Proportional to 253,073.75, 379,421.51 and 153,209.88

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Solution

The fourth proportional to 253,073.75, 379,421.51 and 153,209.88 is: 229,700.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,073.75 : 379,421.51 = 153,209.88 : x
  2. Step 2: Convert to fraction form
    253,073.75/379,421.51 = 153,209.88/x
  3. Step 3: Cross multiply
    253,073.75x = 379,421.51 × 153,209.88
  4. Step 4: Simplify right side
    253,073.75x = 58,131,123,250.47
  5. Step 5: Solve for x
    x = 58,131,123,250.47/253,073.75
  6. Step 6: Final answer
    x = 229,700.33

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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.