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Finding the Third Proportional to 187,972 and 291,174

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Solution

The third proportional to 187,972 and 291,174 is: 451,036.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,972 : 291,174 = 291,174 : x
  2. Step 2: Convert to fraction form
    187,972/291,174 = 291,174/x
  3. Step 3: Cross multiply
    187,972x = 291,174 × 291,174
  4. Step 4: Simplify right side
    187,972x = 84,782,298,276
  5. Step 5: Solve for x
    x = 84,782,298,276/187,972
  6. Step 6: Final answer
    x = 451,036.85

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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.