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Finding the Fourth Proportional to 381,771.37, 572,739.37 and 111,921.69

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Solution

The fourth proportional to 381,771.37, 572,739.37 and 111,921.69 is: 167,906.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,771.37 : 572,739.37 = 111,921.69 : x
  2. Step 2: Convert to fraction form
    381,771.37/572,739.37 = 111,921.69/x
  3. Step 3: Cross multiply
    381,771.37x = 572,739.37 × 111,921.69
  4. Step 4: Simplify right side
    381,771.37x = 64,101,957,940.13
  5. Step 5: Solve for x
    x = 64,101,957,940.13/381,771.37
  6. Step 6: Final answer
    x = 167,906.67

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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.