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Finding the Third Proportional to 179,960 and 393,818

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Solution

The third proportional to 179,960 and 393,818 is: 861,817.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,960 : 393,818 = 393,818 : x
  2. Step 2: Convert to fraction form
    179,960/393,818 = 393,818/x
  3. Step 3: Cross multiply
    179,960x = 393,818 × 393,818
  4. Step 4: Simplify right side
    179,960x = 155,092,617,124
  5. Step 5: Solve for x
    x = 155,092,617,124/179,960
  6. Step 6: Final answer
    x = 861,817.17

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.