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Finding the Third Proportional to 206,658 and 319,366.13

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Solution

The third proportional to 206,658 and 319,366.13 is: 493,543.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,658 : 319,366.13 = 319,366.13 : x
  2. Step 2: Convert to fraction form
    206,658/319,366.13 = 319,366.13/x
  3. Step 3: Cross multiply
    206,658x = 319,366.13 × 319,366.13
  4. Step 4: Simplify right side
    206,658x = 101,994,721,797.52
  5. Step 5: Solve for x
    x = 101,994,721,797.52/206,658
  6. Step 6: Final answer
    x = 493,543.54

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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.