Home / 220,976.16-331,464.26-78,815.69

Finding the Fourth Proportional to 220,976.16, 331,464.26 and 78,815.69

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Solution

The fourth proportional to 220,976.16, 331,464.26 and 78,815.69 is: 118,223.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,976.16 : 331,464.26 = 78,815.69 : x
  2. Step 2: Convert to fraction form
    220,976.16/331,464.26 = 78,815.69/x
  3. Step 3: Cross multiply
    220,976.16x = 331,464.26 × 78,815.69
  4. Step 4: Simplify right side
    220,976.16x = 26,124,584,144.95
  5. Step 5: Solve for x
    x = 26,124,584,144.95/220,976.16
  6. Step 6: Final answer
    x = 118,223.54

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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.