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Finding the Fourth Proportional to 363,221.28, 501,314.40 and 227,318.40

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Solution

The fourth proportional to 363,221.28, 501,314.40 and 227,318.40 is: 313,742.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,221.28 : 501,314.40 = 227,318.40 : x
  2. Step 2: Convert to fraction form
    363,221.28/501,314.40 = 227,318.40/x
  3. Step 3: Cross multiply
    363,221.28x = 501,314.40 × 227,318.40
  4. Step 4: Simplify right side
    363,221.28x = 113,957,987,304.96
  5. Step 5: Solve for x
    x = 113,957,987,304.96/363,221.28
  6. Step 6: Final answer
    x = 313,742.60

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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.