Home / 378,867.24-522,840.42-209,097.72

Finding the Fourth Proportional to 378,867.24, 522,840.42 and 209,097.72

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Solution

The fourth proportional to 378,867.24, 522,840.42 and 209,097.72 is: 288,556.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,867.24 : 522,840.42 = 209,097.72 : x
  2. Step 2: Convert to fraction form
    378,867.24/522,840.42 = 209,097.72/x
  3. Step 3: Cross multiply
    378,867.24x = 522,840.42 × 209,097.72
  4. Step 4: Simplify right side
    378,867.24x = 109,324,739,745.84
  5. Step 5: Solve for x
    x = 109,324,739,745.84/378,867.24
  6. Step 6: Final answer
    x = 288,556.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.