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Finding the Fourth Proportional to 221,152.38, 331,728.78 and 54,940.38

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Solution

The fourth proportional to 221,152.38, 331,728.78 and 54,940.38 is: 82,410.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,152.38 : 331,728.78 = 54,940.38 : x
  2. Step 2: Convert to fraction form
    221,152.38/331,728.78 = 54,940.38/x
  3. Step 3: Cross multiply
    221,152.38x = 331,728.78 × 54,940.38
  4. Step 4: Simplify right side
    221,152.38x = 18,225,304,192.18
  5. Step 5: Solve for x
    x = 18,225,304,192.18/221,152.38
  6. Step 6: Final answer
    x = 82,410.62

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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.