Home / 428,380.20-591,168.10-237,396.76

Finding the Fourth Proportional to 428,380.20, 591,168.10 and 237,396.76

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Solution

The fourth proportional to 428,380.20, 591,168.10 and 237,396.76 is: 327,609.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,380.20 : 591,168.10 = 237,396.76 : x
  2. Step 2: Convert to fraction form
    428,380.20/591,168.10 = 237,396.76/x
  3. Step 3: Cross multiply
    428,380.20x = 591,168.10 × 237,396.76
  4. Step 4: Simplify right side
    428,380.20x = 140,341,391,555.36
  5. Step 5: Solve for x
    x = 140,341,391,555.36/428,380.20
  6. Step 6: Final answer
    x = 327,609.43

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1.5x scale

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.