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Finding the Fourth Proportional to 363,997.10, 545,995.65 and 331,337.90

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Solution

The fourth proportional to 363,997.10, 545,995.65 and 331,337.90 is: 497,006.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,997.10 : 545,995.65 = 331,337.90 : x
  2. Step 2: Convert to fraction form
    363,997.10/545,995.65 = 331,337.90/x
  3. Step 3: Cross multiply
    363,997.10x = 545,995.65 × 331,337.90
  4. Step 4: Simplify right side
    363,997.10x = 180,909,052,080.14
  5. Step 5: Solve for x
    x = 180,909,052,080.14/363,997.10
  6. Step 6: Final answer
    x = 497,006.85

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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.