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Finding the Third Proportional to 206,422 and 314,969

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Solution

The third proportional to 206,422 and 314,969 is: 480,595.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,422 : 314,969 = 314,969 : x
  2. Step 2: Convert to fraction form
    206,422/314,969 = 314,969/x
  3. Step 3: Cross multiply
    206,422x = 314,969 × 314,969
  4. Step 4: Simplify right side
    206,422x = 99,205,470,961
  5. Step 5: Solve for x
    x = 99,205,470,961/206,422
  6. Step 6: Final answer
    x = 480,595.44

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.