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Finding the Third Proportional to 98,399 and 211,131

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Solution

The third proportional to 98,399 and 211,131 is: 453,015.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,399 : 211,131 = 211,131 : x
  2. Step 2: Convert to fraction form
    98,399/211,131 = 211,131/x
  3. Step 3: Cross multiply
    98,399x = 211,131 × 211,131
  4. Step 4: Simplify right side
    98,399x = 44,576,299,161
  5. Step 5: Solve for x
    x = 44,576,299,161/98,399
  6. Step 6: Final answer
    x = 453,015.77

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.