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Finding the Fourth Proportional to 220,843.50, 331,265.25 and 54,631.50

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Solution

The fourth proportional to 220,843.50, 331,265.25 and 54,631.50 is: 81,947.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,843.50 : 331,265.25 = 54,631.50 : x
  2. Step 2: Convert to fraction form
    220,843.50/331,265.25 = 54,631.50/x
  3. Step 3: Cross multiply
    220,843.50x = 331,265.25 × 54,631.50
  4. Step 4: Simplify right side
    220,843.50x = 18,097,517,505.38
  5. Step 5: Solve for x
    x = 18,097,517,505.38/220,843.50
  6. Step 6: Final answer
    x = 81,947.25

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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.