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Finding the Third Proportional to 138,540 and 302,998

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Solution

The third proportional to 138,540 and 302,998 is: 662,680.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,540 : 302,998 = 302,998 : x
  2. Step 2: Convert to fraction form
    138,540/302,998 = 302,998/x
  3. Step 3: Cross multiply
    138,540x = 302,998 × 302,998
  4. Step 4: Simplify right side
    138,540x = 91,807,788,004
  5. Step 5: Solve for x
    x = 91,807,788,004/138,540
  6. Step 6: Final answer
    x = 662,680.73

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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.