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Finding the Third Proportional to 138,435 and 302,718

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Solution

The third proportional to 138,435 and 302,718 is: 661,958.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,435 : 302,718 = 302,718 : x
  2. Step 2: Convert to fraction form
    138,435/302,718 = 302,718/x
  3. Step 3: Cross multiply
    138,435x = 302,718 × 302,718
  4. Step 4: Simplify right side
    138,435x = 91,638,187,524
  5. Step 5: Solve for x
    x = 91,638,187,524/138,435
  6. Step 6: Final answer
    x = 661,958.23

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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.