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Finding the Fourth Proportional to 253,380.92, 349,952.65 and 172,668.31

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Solution

The fourth proportional to 253,380.92, 349,952.65 and 172,668.31 is: 238,477.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,380.92 : 349,952.65 = 172,668.31 : x
  2. Step 2: Convert to fraction form
    253,380.92/349,952.65 = 172,668.31/x
  3. Step 3: Cross multiply
    253,380.92x = 349,952.65 × 172,668.31
  4. Step 4: Simplify right side
    253,380.92x = 60,425,731,348.97
  5. Step 5: Solve for x
    x = 60,425,731,348.97/253,380.92
  6. Step 6: Final answer
    x = 238,477.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.