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Finding the Third Proportional to 171,198 and 257,316

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Solution

The third proportional to 171,198 and 257,316 is: 386,754.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,198 : 257,316 = 257,316 : x
  2. Step 2: Convert to fraction form
    171,198/257,316 = 257,316/x
  3. Step 3: Cross multiply
    171,198x = 257,316 × 257,316
  4. Step 4: Simplify right side
    171,198x = 66,211,523,856
  5. Step 5: Solve for x
    x = 66,211,523,856/171,198
  6. Step 6: Final answer
    x = 386,754.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.