Home / 428,247.18-591,258.42-275,354.04

Finding the Fourth Proportional to 428,247.18, 591,258.42 and 275,354.04

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Solution

The fourth proportional to 428,247.18, 591,258.42 and 275,354.04 is: 380,166.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,247.18 : 591,258.42 = 275,354.04 : x
  2. Step 2: Convert to fraction form
    428,247.18/591,258.42 = 275,354.04/x
  3. Step 3: Cross multiply
    428,247.18x = 591,258.42 × 275,354.04
  4. Step 4: Simplify right side
    428,247.18x = 162,805,394,631.02
  5. Step 5: Solve for x
    x = 162,805,394,631.02/428,247.18
  6. Step 6: Final answer
    x = 380,166.88

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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.