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Finding the Third Proportional to 133,981 and 207,363

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Solution

The third proportional to 133,981 and 207,363 is: 320,936.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,981 : 207,363 = 207,363 : x
  2. Step 2: Convert to fraction form
    133,981/207,363 = 207,363/x
  3. Step 3: Cross multiply
    133,981x = 207,363 × 207,363
  4. Step 4: Simplify right side
    133,981x = 42,999,413,769
  5. Step 5: Solve for x
    x = 42,999,413,769/133,981
  6. Step 6: Final answer
    x = 320,936.65

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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.