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Finding the Third Proportional to 161,826 and 251,259

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Solution

The third proportional to 161,826 and 251,259 is: 390,117.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,826 : 251,259 = 251,259 : x
  2. Step 2: Convert to fraction form
    161,826/251,259 = 251,259/x
  3. Step 3: Cross multiply
    161,826x = 251,259 × 251,259
  4. Step 4: Simplify right side
    161,826x = 63,131,085,081
  5. Step 5: Solve for x
    x = 63,131,085,081/161,826
  6. Step 6: Final answer
    x = 390,117.07

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.