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Finding the Third Proportional to 156,217 and 336,166

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Solution

The third proportional to 156,217 and 336,166 is: 723,401.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,217 : 336,166 = 336,166 : x
  2. Step 2: Convert to fraction form
    156,217/336,166 = 336,166/x
  3. Step 3: Cross multiply
    156,217x = 336,166 × 336,166
  4. Step 4: Simplify right side
    156,217x = 113,007,579,556
  5. Step 5: Solve for x
    x = 113,007,579,556/156,217
  6. Step 6: Final answer
    x = 723,401.29

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.