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Finding the Third Proportional to 154,638 and 329,688

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Solution

The third proportional to 154,638 and 329,688 is: 702,894.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,638 : 329,688 = 329,688 : x
  2. Step 2: Convert to fraction form
    154,638/329,688 = 329,688/x
  3. Step 3: Cross multiply
    154,638x = 329,688 × 329,688
  4. Step 4: Simplify right side
    154,638x = 108,694,177,344
  5. Step 5: Solve for x
    x = 108,694,177,344/154,638
  6. Step 6: Final answer
    x = 702,894.36

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.