Home / 220,190.91-330,338.84-78,048.61

Finding the Fourth Proportional to 220,190.91, 330,338.84 and 78,048.61

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Solution

The fourth proportional to 220,190.91, 330,338.84 and 78,048.61 is: 117,091.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,190.91 : 330,338.84 = 78,048.61 : x
  2. Step 2: Convert to fraction form
    220,190.91/330,338.84 = 78,048.61/x
  3. Step 3: Cross multiply
    220,190.91x = 330,338.84 × 78,048.61
  4. Step 4: Simplify right side
    220,190.91x = 25,782,487,307.75
  5. Step 5: Solve for x
    x = 25,782,487,307.75/220,190.91
  6. Step 6: Final answer
    x = 117,091.51

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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.