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Finding the Third Proportional to 136,317 and 206,928

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Solution

The third proportional to 136,317 and 206,928 is: 314,114.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,317 : 206,928 = 206,928 : x
  2. Step 2: Convert to fraction form
    136,317/206,928 = 206,928/x
  3. Step 3: Cross multiply
    136,317x = 206,928 × 206,928
  4. Step 4: Simplify right side
    136,317x = 42,819,197,184
  5. Step 5: Solve for x
    x = 42,819,197,184/136,317
  6. Step 6: Final answer
    x = 314,114.87

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.