Home / 378,310.04-522,069-208,540.52

Finding the Fourth Proportional to 378,310.04, 522,069 and 208,540.52

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Solution

The fourth proportional to 378,310.04, 522,069 and 208,540.52 is: 287,786.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,310.04 : 522,069 = 208,540.52 : x
  2. Step 2: Convert to fraction form
    378,310.04/522,069 = 208,540.52/x
  3. Step 3: Cross multiply
    378,310.04x = 522,069 × 208,540.52
  4. Step 4: Simplify right side
    378,310.04x = 108,872,540,735.88
  5. Step 5: Solve for x
    x = 108,872,540,735.88/378,310.04
  6. Step 6: Final answer
    x = 287,786.55

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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.