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Finding the Third Proportional to 263,254.50 and 408,375

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Solution

The third proportional to 263,254.50 and 408,375 is: 633,493.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,254.50 : 408,375 = 408,375 : x
  2. Step 2: Convert to fraction form
    263,254.50/408,375 = 408,375/x
  3. Step 3: Cross multiply
    263,254.50x = 408,375 × 408,375
  4. Step 4: Simplify right side
    263,254.50x = 166,770,140,625
  5. Step 5: Solve for x
    x = 166,770,140,625/263,254.50
  6. Step 6: Final answer
    x = 633,493.98

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.