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Finding the Fourth Proportional to 221,711.52, 332,335.08 and 103,285.20

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Solution

The fourth proportional to 221,711.52, 332,335.08 and 103,285.20 is: 154,819.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,711.52 : 332,335.08 = 103,285.20 : x
  2. Step 2: Convert to fraction form
    221,711.52/332,335.08 = 103,285.20/x
  3. Step 3: Cross multiply
    221,711.52x = 332,335.08 × 103,285.20
  4. Step 4: Simplify right side
    221,711.52x = 34,325,295,204.82
  5. Step 5: Solve for x
    x = 34,325,295,204.82/221,711.52
  6. Step 6: Final answer
    x = 154,819.63

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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.