Home / 220,717.20-331,248.60-102,403.20

Finding the Fourth Proportional to 220,717.20, 331,248.60 and 102,403.20

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Solution

The fourth proportional to 220,717.20, 331,248.60 and 102,403.20 is: 153,684.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,717.20 : 331,248.60 = 102,403.20 : x
  2. Step 2: Convert to fraction form
    220,717.20/331,248.60 = 102,403.20/x
  3. Step 3: Cross multiply
    220,717.20x = 331,248.60 × 102,403.20
  4. Step 4: Simplify right side
    220,717.20x = 33,920,916,635.52
  5. Step 5: Solve for x
    x = 33,920,916,635.52/220,717.20
  6. Step 6: Final answer
    x = 153,684.97

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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.