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Finding the Third Proportional to 213,897 and 299,058

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Solution

The third proportional to 213,897 and 299,058 is: 418,125.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,897 : 299,058 = 299,058 : x
  2. Step 2: Convert to fraction form
    213,897/299,058 = 299,058/x
  3. Step 3: Cross multiply
    213,897x = 299,058 × 299,058
  4. Step 4: Simplify right side
    213,897x = 89,435,687,364
  5. Step 5: Solve for x
    x = 89,435,687,364/213,897
  6. Step 6: Final answer
    x = 418,125.02

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.