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Finding the Third Proportional to 83,430 and 180,286

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Solution

The third proportional to 83,430 and 180,286 is: 389,584.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,430 : 180,286 = 180,286 : x
  2. Step 2: Convert to fraction form
    83,430/180,286 = 180,286/x
  3. Step 3: Cross multiply
    83,430x = 180,286 × 180,286
  4. Step 4: Simplify right side
    83,430x = 32,503,041,796
  5. Step 5: Solve for x
    x = 32,503,041,796/83,430
  6. Step 6: Final answer
    x = 389,584.58

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.