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Finding the Third Proportional to 143,682 and 312,234

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Solution

The third proportional to 143,682 and 312,234 is: 678,512.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,682 : 312,234 = 312,234 : x
  2. Step 2: Convert to fraction form
    143,682/312,234 = 312,234/x
  3. Step 3: Cross multiply
    143,682x = 312,234 × 312,234
  4. Step 4: Simplify right side
    143,682x = 97,490,070,756
  5. Step 5: Solve for x
    x = 97,490,070,756/143,682
  6. Step 6: Final answer
    x = 678,512.76

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.