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Finding the Fourth Proportional to 331,814.88, 497,841.12 and 142,195.68

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Solution

The fourth proportional to 331,814.88, 497,841.12 and 142,195.68 is: 213,344.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,814.88 : 497,841.12 = 142,195.68 : x
  2. Step 2: Convert to fraction form
    331,814.88/497,841.12 = 142,195.68/x
  3. Step 3: Cross multiply
    331,814.88x = 497,841.12 × 142,195.68
  4. Step 4: Simplify right side
    331,814.88x = 70,790,856,590.36
  5. Step 5: Solve for x
    x = 70,790,856,590.36/331,814.88
  6. Step 6: Final answer
    x = 213,344.43

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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.