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Finding the Third Proportional to 172,136 and 375,424

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Solution

The third proportional to 172,136 and 375,424 is: 818,789.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,136 : 375,424 = 375,424 : x
  2. Step 2: Convert to fraction form
    172,136/375,424 = 375,424/x
  3. Step 3: Cross multiply
    172,136x = 375,424 × 375,424
  4. Step 4: Simplify right side
    172,136x = 140,943,179,776
  5. Step 5: Solve for x
    x = 140,943,179,776/172,136
  6. Step 6: Final answer
    x = 818,789.68

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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.