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Finding the Third Proportional to 207,262 and 311,470

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Solution

The third proportional to 207,262 and 311,470 is: 468,072.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,262 : 311,470 = 311,470 : x
  2. Step 2: Convert to fraction form
    207,262/311,470 = 311,470/x
  3. Step 3: Cross multiply
    207,262x = 311,470 × 311,470
  4. Step 4: Simplify right side
    207,262x = 97,013,560,900
  5. Step 5: Solve for x
    x = 97,013,560,900/207,262
  6. Step 6: Final answer
    x = 468,072.11

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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.