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Finding the Third Proportional to 91,287 and 197,154

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Solution

The third proportional to 91,287 and 197,154 is: 425,796.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,287 : 197,154 = 197,154 : x
  2. Step 2: Convert to fraction form
    91,287/197,154 = 197,154/x
  3. Step 3: Cross multiply
    91,287x = 197,154 × 197,154
  4. Step 4: Simplify right side
    91,287x = 38,869,699,716
  5. Step 5: Solve for x
    x = 38,869,699,716/91,287
  6. Step 6: Final answer
    x = 425,796.66

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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.