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Finding the Third Proportional to 190,520 and 279,876

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Solution

The third proportional to 190,520 and 279,876 is: 411,140.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,520 : 279,876 = 279,876 : x
  2. Step 2: Convert to fraction form
    190,520/279,876 = 279,876/x
  3. Step 3: Cross multiply
    190,520x = 279,876 × 279,876
  4. Step 4: Simplify right side
    190,520x = 78,330,575,376
  5. Step 5: Solve for x
    x = 78,330,575,376/190,520
  6. Step 6: Final answer
    x = 411,140.96

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.