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Finding the Third Proportional to 218,332 and 326,146

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Solution

The third proportional to 218,332 and 326,146 is: 487,199.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,332 : 326,146 = 326,146 : x
  2. Step 2: Convert to fraction form
    218,332/326,146 = 326,146/x
  3. Step 3: Cross multiply
    218,332x = 326,146 × 326,146
  4. Step 4: Simplify right side
    218,332x = 106,371,213,316
  5. Step 5: Solve for x
    x = 106,371,213,316/218,332
  6. Step 6: Final answer
    x = 487,199.37

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.