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Finding the Third Proportional to 188,817 and 386,382

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Solution

The third proportional to 188,817 and 386,382 is: 790,665.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,817 : 386,382 = 386,382 : x
  2. Step 2: Convert to fraction form
    188,817/386,382 = 386,382/x
  3. Step 3: Cross multiply
    188,817x = 386,382 × 386,382
  4. Step 4: Simplify right side
    188,817x = 149,291,049,924
  5. Step 5: Solve for x
    x = 149,291,049,924/188,817
  6. Step 6: Final answer
    x = 790,665.30

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.