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Finding the Third Proportional to 269,176.50 and 391,236.75

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Solution

The third proportional to 269,176.50 and 391,236.75 is: 568,646.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,176.50 : 391,236.75 = 391,236.75 : x
  2. Step 2: Convert to fraction form
    269,176.50/391,236.75 = 391,236.75/x
  3. Step 3: Cross multiply
    269,176.50x = 391,236.75 × 391,236.75
  4. Step 4: Simplify right side
    269,176.50x = 153,066,194,550.56
  5. Step 5: Solve for x
    x = 153,066,194,550.56/269,176.50
  6. Step 6: Final answer
    x = 568,646.20

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.