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Finding the Third Proportional to 79,490 and 168,457

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Solution

The third proportional to 79,490 and 168,457 is: 356,997.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,490 : 168,457 = 168,457 : x
  2. Step 2: Convert to fraction form
    79,490/168,457 = 168,457/x
  3. Step 3: Cross multiply
    79,490x = 168,457 × 168,457
  4. Step 4: Simplify right side
    79,490x = 28,377,760,849
  5. Step 5: Solve for x
    x = 28,377,760,849/79,490
  6. Step 6: Final answer
    x = 356,997.87

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.