Home / 428,380.88-591,114.12-237,396.56

Finding the Fourth Proportional to 428,380.88, 591,114.12 and 237,396.56

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Solution

The fourth proportional to 428,380.88, 591,114.12 and 237,396.56 is: 327,578.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,380.88 : 591,114.12 = 237,396.56 : x
  2. Step 2: Convert to fraction form
    428,380.88/591,114.12 = 237,396.56/x
  3. Step 3: Cross multiply
    428,380.88x = 591,114.12 × 237,396.56
  4. Step 4: Simplify right side
    428,380.88x = 140,328,458,655.43
  5. Step 5: Solve for x
    x = 140,328,458,655.43/428,380.88
  6. Step 6: Final answer
    x = 327,578.72

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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.