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Finding the Fourth Proportional to 253,004.31, 349,134.45 and 156,251.43

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Solution

The fourth proportional to 253,004.31, 349,134.45 and 156,251.43 is: 215,619.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,004.31 : 349,134.45 = 156,251.43 : x
  2. Step 2: Convert to fraction form
    253,004.31/349,134.45 = 156,251.43/x
  3. Step 3: Cross multiply
    253,004.31x = 349,134.45 × 156,251.43
  4. Step 4: Simplify right side
    253,004.31x = 54,552,757,074.76
  5. Step 5: Solve for x
    x = 54,552,757,074.76/253,004.31
  6. Step 6: Final answer
    x = 215,619.87

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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.