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Finding the Fourth Proportional to 331,972.72, 458,161.14 and 188,754.28

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Solution

The fourth proportional to 331,972.72, 458,161.14 and 188,754.28 is: 260,502.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,972.72 : 458,161.14 = 188,754.28 : x
  2. Step 2: Convert to fraction form
    331,972.72/458,161.14 = 188,754.28/x
  3. Step 3: Cross multiply
    331,972.72x = 458,161.14 × 188,754.28
  4. Step 4: Simplify right side
    331,972.72x = 86,479,876,104.68
  5. Step 5: Solve for x
    x = 86,479,876,104.68/331,972.72
  6. Step 6: Final answer
    x = 260,502.96

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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.