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Finding the Fourth Proportional to 221,728.70, 332,560.65 and 63,940.70

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Solution

The fourth proportional to 221,728.70, 332,560.65 and 63,940.70 is: 95,901.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,728.70 : 332,560.65 = 63,940.70 : x
  2. Step 2: Convert to fraction form
    221,728.70/332,560.65 = 63,940.70/x
  3. Step 3: Cross multiply
    221,728.70x = 332,560.65 × 63,940.70
  4. Step 4: Simplify right side
    221,728.70x = 21,264,160,753.46
  5. Step 5: Solve for x
    x = 21,264,160,753.46/221,728.70
  6. Step 6: Final answer
    x = 95,901.71

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1.5x scale

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.