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Finding the Fourth Proportional to 220,505.12, 330,757.68 and 54,293.12

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Solution

The fourth proportional to 220,505.12, 330,757.68 and 54,293.12 is: 81,439.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,505.12 : 330,757.68 = 54,293.12 : x
  2. Step 2: Convert to fraction form
    220,505.12/330,757.68 = 54,293.12/x
  3. Step 3: Cross multiply
    220,505.12x = 330,757.68 × 54,293.12
  4. Step 4: Simplify right side
    220,505.12x = 17,957,866,411.16
  5. Step 5: Solve for x
    x = 17,957,866,411.16/220,505.12
  6. Step 6: Final answer
    x = 81,439.68

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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.