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Finding the Third Proportional to 138,115 and 302,582

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Solution

The third proportional to 138,115 and 302,582 is: 662,895.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,115 : 302,582 = 302,582 : x
  2. Step 2: Convert to fraction form
    138,115/302,582 = 302,582/x
  3. Step 3: Cross multiply
    138,115x = 302,582 × 302,582
  4. Step 4: Simplify right side
    138,115x = 91,555,866,724
  5. Step 5: Solve for x
    x = 91,555,866,724/138,115
  6. Step 6: Final answer
    x = 662,895.90

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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.