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Finding the Third Proportional to 90,780 and 199,482

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Solution

The third proportional to 90,780 and 199,482 is: 438,346.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,780 : 199,482 = 199,482 : x
  2. Step 2: Convert to fraction form
    90,780/199,482 = 199,482/x
  3. Step 3: Cross multiply
    90,780x = 199,482 × 199,482
  4. Step 4: Simplify right side
    90,780x = 39,793,068,324
  5. Step 5: Solve for x
    x = 39,793,068,324/90,780
  6. Step 6: Final answer
    x = 438,346.20

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.