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Finding the Third Proportional to 172,969.03 and 379,990.13

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Solution

The third proportional to 172,969.03 and 379,990.13 is: 834,788.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,969.03 : 379,990.13 = 379,990.13 : x
  2. Step 2: Convert to fraction form
    172,969.03/379,990.13 = 379,990.13/x
  3. Step 3: Cross multiply
    172,969.03x = 379,990.13 × 379,990.13
  4. Step 4: Simplify right side
    172,969.03x = 144,392,495,097.52
  5. Step 5: Solve for x
    x = 144,392,495,097.52/172,969.03
  6. Step 6: Final answer
    x = 834,788.14

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.