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Finding the Third Proportional to 177,487 and 386,072

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Solution

The third proportional to 177,487 and 386,072 is: 839,788.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,487 : 386,072 = 386,072 : x
  2. Step 2: Convert to fraction form
    177,487/386,072 = 386,072/x
  3. Step 3: Cross multiply
    177,487x = 386,072 × 386,072
  4. Step 4: Simplify right side
    177,487x = 149,051,589,184
  5. Step 5: Solve for x
    x = 149,051,589,184/177,487
  6. Step 6: Final answer
    x = 839,788.77

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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.