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Finding the Third Proportional to 201,899 and 313,510

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Solution

The third proportional to 201,899 and 313,510 is: 486,820.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,899 : 313,510 = 313,510 : x
  2. Step 2: Convert to fraction form
    201,899/313,510 = 313,510/x
  3. Step 3: Cross multiply
    201,899x = 313,510 × 313,510
  4. Step 4: Simplify right side
    201,899x = 98,288,520,100
  5. Step 5: Solve for x
    x = 98,288,520,100/201,899
  6. Step 6: Final answer
    x = 486,820.24

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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.