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Finding the Third Proportional to 172,990.69 and 374,412.38

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Solution

The third proportional to 172,990.69 and 374,412.38 is: 810,359.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,990.69 : 374,412.38 = 374,412.38 : x
  2. Step 2: Convert to fraction form
    172,990.69/374,412.38 = 374,412.38/x
  3. Step 3: Cross multiply
    172,990.69x = 374,412.38 × 374,412.38
  4. Step 4: Simplify right side
    172,990.69x = 140,184,626,553.14
  5. Step 5: Solve for x
    x = 140,184,626,553.14/172,990.69
  6. Step 6: Final answer
    x = 810,359.38

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.