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Finding the Third Proportional to 188,392 and 409,508

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Solution

The third proportional to 188,392 and 409,508 is: 890,148.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,392 : 409,508 = 409,508 : x
  2. Step 2: Convert to fraction form
    188,392/409,508 = 409,508/x
  3. Step 3: Cross multiply
    188,392x = 409,508 × 409,508
  4. Step 4: Simplify right side
    188,392x = 167,696,802,064
  5. Step 5: Solve for x
    x = 167,696,802,064/188,392
  6. Step 6: Final answer
    x = 890,148.21

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.