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Finding the Fourth Proportional to 221,489.40, 332,331.30 and 103,099.80

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Solution

The fourth proportional to 221,489.40, 332,331.30 and 103,099.80 is: 154,694.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,489.40 : 332,331.30 = 103,099.80 : x
  2. Step 2: Convert to fraction form
    221,489.40/332,331.30 = 103,099.80/x
  3. Step 3: Cross multiply
    221,489.40x = 332,331.30 × 103,099.80
  4. Step 4: Simplify right side
    221,489.40x = 34,263,290,563.74
  5. Step 5: Solve for x
    x = 34,263,290,563.74/221,489.40
  6. Step 6: Final answer
    x = 154,694.95

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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.