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Finding the Third Proportional to 171,990 and 375,216

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Solution

The third proportional to 171,990 and 375,216 is: 818,576.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,990 : 375,216 = 375,216 : x
  2. Step 2: Convert to fraction form
    171,990/375,216 = 375,216/x
  3. Step 3: Cross multiply
    171,990x = 375,216 × 375,216
  4. Step 4: Simplify right side
    171,990x = 140,787,046,656
  5. Step 5: Solve for x
    x = 140,787,046,656/171,990
  6. Step 6: Final answer
    x = 818,576.93

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.