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Finding the Third Proportional to 177,486 and 386,070

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Solution

The third proportional to 177,486 and 386,070 is: 839,784.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,486 : 386,070 = 386,070 : x
  2. Step 2: Convert to fraction form
    177,486/386,070 = 386,070/x
  3. Step 3: Cross multiply
    177,486x = 386,070 × 386,070
  4. Step 4: Simplify right side
    177,486x = 149,050,044,900
  5. Step 5: Solve for x
    x = 149,050,044,900/177,486
  6. Step 6: Final answer
    x = 839,784.80

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.