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Finding the Fourth Proportional to 331,887.60, 497,773.80 and 121,417.20

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Solution

The fourth proportional to 331,887.60, 497,773.80 and 121,417.20 is: 182,104.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,887.60 : 497,773.80 = 121,417.20 : x
  2. Step 2: Convert to fraction form
    331,887.60/497,773.80 = 121,417.20/x
  3. Step 3: Cross multiply
    331,887.60x = 497,773.80 × 121,417.20
  4. Step 4: Simplify right side
    331,887.60x = 60,438,301,029.36
  5. Step 5: Solve for x
    x = 60,438,301,029.36/331,887.60
  6. Step 6: Final answer
    x = 182,104.73

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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.