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Finding the Third Proportional to 311,121 and 482,649.50

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Solution

The third proportional to 311,121 and 482,649.50 is: 748,745.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,121 : 482,649.50 = 482,649.50 : x
  2. Step 2: Convert to fraction form
    311,121/482,649.50 = 482,649.50/x
  3. Step 3: Cross multiply
    311,121x = 482,649.50 × 482,649.50
  4. Step 4: Simplify right side
    311,121x = 232,950,539,850.25
  5. Step 5: Solve for x
    x = 232,950,539,850.25/311,121
  6. Step 6: Final answer
    x = 748,745.79

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.