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Finding the Third Proportional to 187,672 and 291,031

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Solution

The third proportional to 187,672 and 291,031 is: 451,314.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,672 : 291,031 = 291,031 : x
  2. Step 2: Convert to fraction form
    187,672/291,031 = 291,031/x
  3. Step 3: Cross multiply
    187,672x = 291,031 × 291,031
  4. Step 4: Simplify right side
    187,672x = 84,699,042,961
  5. Step 5: Solve for x
    x = 84,699,042,961/187,672
  6. Step 6: Final answer
    x = 451,314.22

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.