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Finding the Third Proportional to 201,896 and 313,505

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Solution

The third proportional to 201,896 and 313,505 is: 486,811.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,896 : 313,505 = 313,505 : x
  2. Step 2: Convert to fraction form
    201,896/313,505 = 313,505/x
  3. Step 3: Cross multiply
    201,896x = 313,505 × 313,505
  4. Step 4: Simplify right side
    201,896x = 98,285,385,025
  5. Step 5: Solve for x
    x = 98,285,385,025/201,896
  6. Step 6: Final answer
    x = 486,811.95

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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.