Home / 378,934.28-522,929.34-209,168.42

Finding the Fourth Proportional to 378,934.28, 522,929.34 and 209,168.42

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Solution

The fourth proportional to 378,934.28, 522,929.34 and 209,168.42 is: 288,652.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,934.28 : 522,929.34 = 209,168.42 : x
  2. Step 2: Convert to fraction form
    378,934.28/522,929.34 = 209,168.42/x
  3. Step 3: Cross multiply
    378,934.28x = 522,929.34 × 209,168.42
  4. Step 4: Simplify right side
    378,934.28x = 109,380,303,819.44
  5. Step 5: Solve for x
    x = 109,380,303,819.44/378,934.28
  6. Step 6: Final answer
    x = 288,652.44

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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.