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Finding the Fourth Proportional to 428,379.70, 591,167.41 and 237,396.26

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Solution

The fourth proportional to 428,379.70, 591,167.41 and 237,396.26 is: 327,608.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,379.70 : 591,167.41 = 237,396.26 : x
  2. Step 2: Convert to fraction form
    428,379.70/591,167.41 = 237,396.26/x
  3. Step 3: Cross multiply
    428,379.70x = 591,167.41 × 237,396.26
  4. Step 4: Simplify right side
    428,379.70x = 140,340,932,167.89
  5. Step 5: Solve for x
    x = 140,340,932,167.89/428,379.70
  6. Step 6: Final answer
    x = 327,608.74

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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.