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Finding the Third Proportional to 91,407 and 199,581

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Solution

The third proportional to 91,407 and 199,581 is: 435,771.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,407 : 199,581 = 199,581 : x
  2. Step 2: Convert to fraction form
    91,407/199,581 = 199,581/x
  3. Step 3: Cross multiply
    91,407x = 199,581 × 199,581
  4. Step 4: Simplify right side
    91,407x = 39,832,575,561
  5. Step 5: Solve for x
    x = 39,832,575,561/91,407
  6. Step 6: Final answer
    x = 435,771.61

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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.