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Finding the Third Proportional to 138,414 and 302,674

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Solution

The third proportional to 138,414 and 302,674 is: 661,866.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,414 : 302,674 = 302,674 : x
  2. Step 2: Convert to fraction form
    138,414/302,674 = 302,674/x
  3. Step 3: Cross multiply
    138,414x = 302,674 × 302,674
  4. Step 4: Simplify right side
    138,414x = 91,611,550,276
  5. Step 5: Solve for x
    x = 91,611,550,276/138,414
  6. Step 6: Final answer
    x = 661,866.21

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.