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Finding the Third Proportional to 166,087 and 257,881

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Solution

The third proportional to 166,087 and 257,881 is: 400,408.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,087 : 257,881 = 257,881 : x
  2. Step 2: Convert to fraction form
    166,087/257,881 = 257,881/x
  3. Step 3: Cross multiply
    166,087x = 257,881 × 257,881
  4. Step 4: Simplify right side
    166,087x = 66,502,610,161
  5. Step 5: Solve for x
    x = 66,502,610,161/166,087
  6. Step 6: Final answer
    x = 400,408.28

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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.