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Finding the Fourth Proportional to 428,379.45, 591,167.07 and 237,396.01

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Solution

The fourth proportional to 428,379.45, 591,167.07 and 237,396.01 is: 327,608.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,379.45 : 591,167.07 = 237,396.01 : x
  2. Step 2: Convert to fraction form
    428,379.45/591,167.07 = 237,396.01/x
  3. Step 3: Cross multiply
    428,379.45x = 591,167.07 × 237,396.01
  4. Step 4: Simplify right side
    428,379.45x = 140,340,702,474.41
  5. Step 5: Solve for x
    x = 140,340,702,474.41/428,379.45
  6. Step 6: Final answer
    x = 327,608.39

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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.