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Finding the Third Proportional to 140,931 and 218,124

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Solution

The third proportional to 140,931 and 218,124 is: 337,598.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,931 : 218,124 = 218,124 : x
  2. Step 2: Convert to fraction form
    140,931/218,124 = 218,124/x
  3. Step 3: Cross multiply
    140,931x = 218,124 × 218,124
  4. Step 4: Simplify right side
    140,931x = 47,578,079,376
  5. Step 5: Solve for x
    x = 47,578,079,376/140,931
  6. Step 6: Final answer
    x = 337,598.39

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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.