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Finding the Third Proportional to 135,270 and 311,769

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Solution

The third proportional to 135,270 and 311,769 is: 718,562.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,270 : 311,769 = 311,769 : x
  2. Step 2: Convert to fraction form
    135,270/311,769 = 311,769/x
  3. Step 3: Cross multiply
    135,270x = 311,769 × 311,769
  4. Step 4: Simplify right side
    135,270x = 97,199,909,361
  5. Step 5: Solve for x
    x = 97,199,909,361/135,270
  6. Step 6: Final answer
    x = 718,562.20

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Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.