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Finding the Third Proportional to 161,428 and 318,736

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Solution

The third proportional to 161,428 and 318,736 is: 629,337.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,428 : 318,736 = 318,736 : x
  2. Step 2: Convert to fraction form
    161,428/318,736 = 318,736/x
  3. Step 3: Cross multiply
    161,428x = 318,736 × 318,736
  4. Step 4: Simplify right side
    161,428x = 101,592,637,696
  5. Step 5: Solve for x
    x = 101,592,637,696/161,428
  6. Step 6: Final answer
    x = 629,337.15

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.