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Finding the Third Proportional to 172,111 and 374,842

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Solution

The third proportional to 172,111 and 374,842 is: 816,371.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,111 : 374,842 = 374,842 : x
  2. Step 2: Convert to fraction form
    172,111/374,842 = 374,842/x
  3. Step 3: Cross multiply
    172,111x = 374,842 × 374,842
  4. Step 4: Simplify right side
    172,111x = 140,506,524,964
  5. Step 5: Solve for x
    x = 140,506,524,964/172,111
  6. Step 6: Final answer
    x = 816,371.56

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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.