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Finding the Fourth Proportional to 331,658.40, 497,390.40 and 154,122.60

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Solution

The fourth proportional to 331,658.40, 497,390.40 and 154,122.60 is: 231,138.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,658.40 : 497,390.40 = 154,122.60 : x
  2. Step 2: Convert to fraction form
    331,658.40/497,390.40 = 154,122.60/x
  3. Step 3: Cross multiply
    331,658.40x = 497,390.40 × 154,122.60
  4. Step 4: Simplify right side
    331,658.40x = 76,659,101,663.04
  5. Step 5: Solve for x
    x = 76,659,101,663.04/331,658.40
  6. Step 6: Final answer
    x = 231,138.73

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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.