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Finding the Third Proportional to 201,903 and 313,516

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Solution

The third proportional to 201,903 and 313,516 is: 486,829.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,903 : 313,516 = 313,516 : x
  2. Step 2: Convert to fraction form
    201,903/313,516 = 313,516/x
  3. Step 3: Cross multiply
    201,903x = 313,516 × 313,516
  4. Step 4: Simplify right side
    201,903x = 98,292,282,256
  5. Step 5: Solve for x
    x = 98,292,282,256/201,903
  6. Step 6: Final answer
    x = 486,829.23

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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.