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Finding the Third Proportional to 147,022 and 318,939

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Solution

The third proportional to 147,022 and 318,939 is: 691,883.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,022 : 318,939 = 318,939 : x
  2. Step 2: Convert to fraction form
    147,022/318,939 = 318,939/x
  3. Step 3: Cross multiply
    147,022x = 318,939 × 318,939
  4. Step 4: Simplify right side
    147,022x = 101,722,085,721
  5. Step 5: Solve for x
    x = 101,722,085,721/147,022
  6. Step 6: Final answer
    x = 691,883.43

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.