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Finding the Third Proportional to 202,726 and 313,930

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Solution

The third proportional to 202,726 and 313,930 is: 486,134.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,726 : 313,930 = 313,930 : x
  2. Step 2: Convert to fraction form
    202,726/313,930 = 313,930/x
  3. Step 3: Cross multiply
    202,726x = 313,930 × 313,930
  4. Step 4: Simplify right side
    202,726x = 98,552,044,900
  5. Step 5: Solve for x
    x = 98,552,044,900/202,726
  6. Step 6: Final answer
    x = 486,134.22

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.