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Finding the Third Proportional to 199,720 and 434,432

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Solution

The third proportional to 199,720 and 434,432 is: 944,978.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,720 : 434,432 = 434,432 : x
  2. Step 2: Convert to fraction form
    199,720/434,432 = 434,432/x
  3. Step 3: Cross multiply
    199,720x = 434,432 × 434,432
  4. Step 4: Simplify right side
    199,720x = 188,731,162,624
  5. Step 5: Solve for x
    x = 188,731,162,624/199,720
  6. Step 6: Final answer
    x = 944,978.78

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.