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Finding the Third Proportional to 136,530 and 213,705

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Solution

The third proportional to 136,530 and 213,705 is: 334,503.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,530 : 213,705 = 213,705 : x
  2. Step 2: Convert to fraction form
    136,530/213,705 = 213,705/x
  3. Step 3: Cross multiply
    136,530x = 213,705 × 213,705
  4. Step 4: Simplify right side
    136,530x = 45,669,827,025
  5. Step 5: Solve for x
    x = 45,669,827,025/136,530
  6. Step 6: Final answer
    x = 334,503.97

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.