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Finding the Third Proportional to 172,503 and 378,216

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Solution

The third proportional to 172,503 and 378,216 is: 829,245.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,503 : 378,216 = 378,216 : x
  2. Step 2: Convert to fraction form
    172,503/378,216 = 378,216/x
  3. Step 3: Cross multiply
    172,503x = 378,216 × 378,216
  4. Step 4: Simplify right side
    172,503x = 143,047,342,656
  5. Step 5: Solve for x
    x = 143,047,342,656/172,503
  6. Step 6: Final answer
    x = 829,245.54

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.