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Finding the Fourth Proportional to 574,682.20, 861,723.60 and 214,556.56

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Solution

The fourth proportional to 574,682.20, 861,723.60 and 214,556.56 is: 321,722.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,682.20 : 861,723.60 = 214,556.56 : x
  2. Step 2: Convert to fraction form
    574,682.20/861,723.60 = 214,556.56/x
  3. Step 3: Cross multiply
    574,682.20x = 861,723.60 × 214,556.56
  4. Step 4: Simplify right side
    574,682.20x = 184,888,451,286.82
  5. Step 5: Solve for x
    x = 184,888,451,286.82/574,682.20
  6. Step 6: Final answer
    x = 321,722.95

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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.