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Finding the Fourth Proportional to 331,575.60, 497,305.80 and 121,105.20

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Solution

The fourth proportional to 331,575.60, 497,305.80 and 121,105.20 is: 181,636.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,575.60 : 497,305.80 = 121,105.20 : x
  2. Step 2: Convert to fraction form
    331,575.60/497,305.80 = 121,105.20/x
  3. Step 3: Cross multiply
    331,575.60x = 497,305.80 × 121,105.20
  4. Step 4: Simplify right side
    331,575.60x = 60,226,318,370.16
  5. Step 5: Solve for x
    x = 60,226,318,370.16/331,575.60
  6. Step 6: Final answer
    x = 181,636.76

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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.