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Finding the Third Proportional to 311,688 and 444,180

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Solution

The third proportional to 311,688 and 444,180 is: 632,991.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,688 : 444,180 = 444,180 : x
  2. Step 2: Convert to fraction form
    311,688/444,180 = 444,180/x
  3. Step 3: Cross multiply
    311,688x = 444,180 × 444,180
  4. Step 4: Simplify right side
    311,688x = 197,295,872,400
  5. Step 5: Solve for x
    x = 197,295,872,400/311,688
  6. Step 6: Final answer
    x = 632,991.56

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.