Home / 216,563.24-324,879.90-66,768.50

Finding the Fourth Proportional to 216,563.24, 324,879.90 and 66,768.50

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Solution

The fourth proportional to 216,563.24, 324,879.90 and 66,768.50 is: 100,163.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,563.24 : 324,879.90 = 66,768.50 : x
  2. Step 2: Convert to fraction form
    216,563.24/324,879.90 = 66,768.50/x
  3. Step 3: Cross multiply
    216,563.24x = 324,879.90 × 66,768.50
  4. Step 4: Simplify right side
    216,563.24x = 21,691,743,603.15
  5. Step 5: Solve for x
    x = 21,691,743,603.15/216,563.24
  6. Step 6: Final answer
    x = 100,163.55

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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.