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Finding the Third Proportional to 187,881 and 291,254

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Solution

The third proportional to 187,881 and 291,254 is: 451,503.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,881 : 291,254 = 291,254 : x
  2. Step 2: Convert to fraction form
    187,881/291,254 = 291,254/x
  3. Step 3: Cross multiply
    187,881x = 291,254 × 291,254
  4. Step 4: Simplify right side
    187,881x = 84,828,892,516
  5. Step 5: Solve for x
    x = 84,828,892,516/187,881
  6. Step 6: Final answer
    x = 451,503.31

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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.