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Finding the Third Proportional to 182,603 and 398,422

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Solution

The third proportional to 182,603 and 398,422 is: 869,318.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    182,603 : 398,422 = 398,422 : x
  2. Step 2: Convert to fraction form
    182,603/398,422 = 398,422/x
  3. Step 3: Cross multiply
    182,603x = 398,422 × 398,422
  4. Step 4: Simplify right side
    182,603x = 158,740,090,084
  5. Step 5: Solve for x
    x = 158,740,090,084/182,603
  6. Step 6: Final answer
    x = 869,318.08

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.