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Finding the Third Proportional to 91,913 and 199,378

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Solution

The third proportional to 91,913 and 199,378 is: 432,491.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,913 : 199,378 = 199,378 : x
  2. Step 2: Convert to fraction form
    91,913/199,378 = 199,378/x
  3. Step 3: Cross multiply
    91,913x = 199,378 × 199,378
  4. Step 4: Simplify right side
    91,913x = 39,751,586,884
  5. Step 5: Solve for x
    x = 39,751,586,884/91,913
  6. Step 6: Final answer
    x = 432,491.45

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.