Home / 428,489.12-591,304.92-247,201.44

Finding the Fourth Proportional to 428,489.12, 591,304.92 and 247,201.44

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Solution

The fourth proportional to 428,489.12, 591,304.92 and 247,201.44 is: 341,132.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,489.12 : 591,304.92 = 247,201.44 : x
  2. Step 2: Convert to fraction form
    428,489.12/591,304.92 = 247,201.44/x
  3. Step 3: Cross multiply
    428,489.12x = 591,304.92 × 247,201.44
  4. Step 4: Simplify right side
    428,489.12x = 146,171,427,703.09
  5. Step 5: Solve for x
    x = 146,171,427,703.09/428,489.12
  6. Step 6: Final answer
    x = 341,132.18

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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.