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Finding the Third Proportional to 200,960 and 310,884

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Solution

The third proportional to 200,960 and 310,884 is: 480,935.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,960 : 310,884 = 310,884 : x
  2. Step 2: Convert to fraction form
    200,960/310,884 = 310,884/x
  3. Step 3: Cross multiply
    200,960x = 310,884 × 310,884
  4. Step 4: Simplify right side
    200,960x = 96,648,861,456
  5. Step 5: Solve for x
    x = 96,648,861,456/200,960
  6. Step 6: Final answer
    x = 480,935.82

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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.