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Finding the Fourth Proportional to 347,591.28, 479,727.24 and 220,278.48

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Solution

The fourth proportional to 347,591.28, 479,727.24 and 220,278.48 is: 304,016.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,591.28 : 479,727.24 = 220,278.48 : x
  2. Step 2: Convert to fraction form
    347,591.28/479,727.24 = 220,278.48/x
  3. Step 3: Cross multiply
    347,591.28x = 479,727.24 × 220,278.48
  4. Step 4: Simplify right side
    347,591.28x = 105,673,587,241.80
  5. Step 5: Solve for x
    x = 105,673,587,241.80/347,591.28
  6. Step 6: Final answer
    x = 304,016.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.