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Finding the Third Proportional to 275,253.75 and 425,406.75

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Solution

The third proportional to 275,253.75 and 425,406.75 is: 657,469.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,253.75 : 425,406.75 = 425,406.75 : x
  2. Step 2: Convert to fraction form
    275,253.75/425,406.75 = 425,406.75/x
  3. Step 3: Cross multiply
    275,253.75x = 425,406.75 × 425,406.75
  4. Step 4: Simplify right side
    275,253.75x = 180,970,902,945.56
  5. Step 5: Solve for x
    x = 180,970,902,945.56/275,253.75
  6. Step 6: Final answer
    x = 657,469.35

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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.