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Finding the Third Proportional to 186,920 and 411,206

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Solution

The third proportional to 186,920 and 411,206 is: 904,613.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,920 : 411,206 = 411,206 : x
  2. Step 2: Convert to fraction form
    186,920/411,206 = 411,206/x
  3. Step 3: Cross multiply
    186,920x = 411,206 × 411,206
  4. Step 4: Simplify right side
    186,920x = 169,090,374,436
  5. Step 5: Solve for x
    x = 169,090,374,436/186,920
  6. Step 6: Final answer
    x = 904,613.60

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.