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Finding the Fourth Proportional to 331,332.56, 496,714.20 and 115,163.20

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Solution

The fourth proportional to 331,332.56, 496,714.20 and 115,163.20 is: 172,645.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,332.56 : 496,714.20 = 115,163.20 : x
  2. Step 2: Convert to fraction form
    331,332.56/496,714.20 = 115,163.20/x
  3. Step 3: Cross multiply
    331,332.56x = 496,714.20 × 115,163.20
  4. Step 4: Simplify right side
    331,332.56x = 57,203,196,757.44
  5. Step 5: Solve for x
    x = 57,203,196,757.44/331,332.56
  6. Step 6: Final answer
    x = 172,645.87

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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.