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Finding the Fourth Proportional to 220,119.40, 330,159.90 and 72,375.40

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Solution

The fourth proportional to 220,119.40, 330,159.90 and 72,375.40 is: 108,556.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,119.40 : 330,159.90 = 72,375.40 : x
  2. Step 2: Convert to fraction form
    220,119.40/330,159.90 = 72,375.40/x
  3. Step 3: Cross multiply
    220,119.40x = 330,159.90 × 72,375.40
  4. Step 4: Simplify right side
    220,119.40x = 23,895,454,826.46
  5. Step 5: Solve for x
    x = 23,895,454,826.46/220,119.40
  6. Step 6: Final answer
    x = 108,556.79

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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.