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Finding the Fourth Proportional to 215,693.28, 323,476.56 and 75,425.76

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Solution

The fourth proportional to 215,693.28, 323,476.56 and 75,425.76 is: 113,116.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,693.28 : 323,476.56 = 75,425.76 : x
  2. Step 2: Convert to fraction form
    215,693.28/323,476.56 = 75,425.76/x
  3. Step 3: Cross multiply
    215,693.28x = 323,476.56 × 75,425.76
  4. Step 4: Simplify right side
    215,693.28x = 24,398,465,380.19
  5. Step 5: Solve for x
    x = 24,398,465,380.19/215,693.28
  6. Step 6: Final answer
    x = 113,116.48

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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.