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Finding the Fourth Proportional to 331,508.90, 457,353.03 and 188,249.47

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Solution

The fourth proportional to 331,508.90, 457,353.03 and 188,249.47 is: 259,710.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,508.90 : 457,353.03 = 188,249.47 : x
  2. Step 2: Convert to fraction form
    331,508.90/457,353.03 = 188,249.47/x
  3. Step 3: Cross multiply
    331,508.90x = 457,353.03 × 188,249.47
  4. Step 4: Simplify right side
    331,508.90x = 86,096,465,062.95
  5. Step 5: Solve for x
    x = 86,096,465,062.95/331,508.90
  6. Step 6: Final answer
    x = 259,710.87

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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.