Home / 378,398.20-522,193.60-206,314.75

Finding the Fourth Proportional to 378,398.20, 522,193.60 and 206,314.75

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Solution

The fourth proportional to 378,398.20, 522,193.60 and 206,314.75 is: 284,716.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,398.20 : 522,193.60 = 206,314.75 : x
  2. Step 2: Convert to fraction form
    378,398.20/522,193.60 = 206,314.75/x
  3. Step 3: Cross multiply
    378,398.20x = 522,193.60 × 206,314.75
  4. Step 4: Simplify right side
    378,398.20x = 107,736,242,035.60
  5. Step 5: Solve for x
    x = 107,736,242,035.60/378,398.20
  6. Step 6: Final answer
    x = 284,716.58

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1.5x scale

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.