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Finding the Third Proportional to 175,279.78 and 387,343.69

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Solution

The third proportional to 175,279.78 and 387,343.69 is: 855,975.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,279.78 : 387,343.69 = 387,343.69 : x
  2. Step 2: Convert to fraction form
    175,279.78/387,343.69 = 387,343.69/x
  3. Step 3: Cross multiply
    175,279.78x = 387,343.69 × 387,343.69
  4. Step 4: Simplify right side
    175,279.78x = 150,035,132,246.10
  5. Step 5: Solve for x
    x = 150,035,132,246.10/175,279.78
  6. Step 6: Final answer
    x = 855,975.12

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.