Home / 221,248.40-331,834.20-80,934.80

Finding the Fourth Proportional to 221,248.40, 331,834.20 and 80,934.80

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Solution

The fourth proportional to 221,248.40, 331,834.20 and 80,934.80 is: 121,388.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,248.40 : 331,834.20 = 80,934.80 : x
  2. Step 2: Convert to fraction form
    221,248.40/331,834.20 = 80,934.80/x
  3. Step 3: Cross multiply
    221,248.40x = 331,834.20 × 80,934.80
  4. Step 4: Simplify right side
    221,248.40x = 26,856,934,610.16
  5. Step 5: Solve for x
    x = 26,856,934,610.16/221,248.40
  6. Step 6: Final answer
    x = 121,388.15

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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.