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Finding the Fourth Proportional to 521,249.88, 781,699.86 and 331,593.24

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Solution

The fourth proportional to 521,249.88, 781,699.86 and 331,593.24 is: 497,278.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,249.88 : 781,699.86 = 331,593.24 : x
  2. Step 2: Convert to fraction form
    521,249.88/781,699.86 = 331,593.24/x
  3. Step 3: Cross multiply
    521,249.88x = 781,699.86 × 331,593.24
  4. Step 4: Simplify right side
    521,249.88x = 259,206,389,284.95
  5. Step 5: Solve for x
    x = 259,206,389,284.95/521,249.88
  6. Step 6: Final answer
    x = 497,278.56

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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.