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Finding the Third Proportional to 189,566 and 400,876

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Solution

The third proportional to 189,566 and 400,876 is: 847,734.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,566 : 400,876 = 400,876 : x
  2. Step 2: Convert to fraction form
    189,566/400,876 = 400,876/x
  3. Step 3: Cross multiply
    189,566x = 400,876 × 400,876
  4. Step 4: Simplify right side
    189,566x = 160,701,567,376
  5. Step 5: Solve for x
    x = 160,701,567,376/189,566
  6. Step 6: Final answer
    x = 847,734.13

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.