Home / 378,819.60-522,760.68-209,041.44

Finding the Fourth Proportional to 378,819.60, 522,760.68 and 209,041.44

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Solution

The fourth proportional to 378,819.60, 522,760.68 and 209,041.44 is: 288,471.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,819.60 : 522,760.68 = 209,041.44 : x
  2. Step 2: Convert to fraction form
    378,819.60/522,760.68 = 209,041.44/x
  3. Step 3: Cross multiply
    378,819.60x = 522,760.68 × 209,041.44
  4. Step 4: Simplify right side
    378,819.60x = 109,278,645,322.58
  5. Step 5: Solve for x
    x = 109,278,645,322.58/378,819.60
  6. Step 6: Final answer
    x = 288,471.47

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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.