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Finding the Third Proportional to 207,330 and 311,158

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Solution

The third proportional to 207,330 and 311,158 is: 466,981.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,330 : 311,158 = 311,158 : x
  2. Step 2: Convert to fraction form
    207,330/311,158 = 311,158/x
  3. Step 3: Cross multiply
    207,330x = 311,158 × 311,158
  4. Step 4: Simplify right side
    207,330x = 96,819,300,964
  5. Step 5: Solve for x
    x = 96,819,300,964/207,330
  6. Step 6: Final answer
    x = 466,981.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.