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Finding the Third Proportional to 138,174 and 213,370

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Solution

The third proportional to 138,174 and 213,370 is: 329,488.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,174 : 213,370 = 213,370 : x
  2. Step 2: Convert to fraction form
    138,174/213,370 = 213,370/x
  3. Step 3: Cross multiply
    138,174x = 213,370 × 213,370
  4. Step 4: Simplify right side
    138,174x = 45,526,756,900
  5. Step 5: Solve for x
    x = 45,526,756,900/138,174
  6. Step 6: Final answer
    x = 329,488.59

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.