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Finding the Fourth Proportional to 221,211.95, 332,150.22 and 126,549

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Solution

The fourth proportional to 221,211.95, 332,150.22 and 126,549 is: 190,013.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,211.95 : 332,150.22 = 126,549 : x
  2. Step 2: Convert to fraction form
    221,211.95/332,150.22 = 126,549/x
  3. Step 3: Cross multiply
    221,211.95x = 332,150.22 × 126,549
  4. Step 4: Simplify right side
    221,211.95x = 42,033,278,190.78
  5. Step 5: Solve for x
    x = 42,033,278,190.78/221,211.95
  6. Step 6: Final answer
    x = 190,013.60

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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.