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Finding the Fourth Proportional to 521,067.60, 781,481.96 and 251,057.84

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Solution

The fourth proportional to 521,067.60, 781,481.96 and 251,057.84 is: 376,529.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,067.60 : 781,481.96 = 251,057.84 : x
  2. Step 2: Convert to fraction form
    521,067.60/781,481.96 = 251,057.84/x
  3. Step 3: Cross multiply
    521,067.60x = 781,481.96 × 251,057.84
  4. Step 4: Simplify right side
    521,067.60x = 196,197,172,876.57
  5. Step 5: Solve for x
    x = 196,197,172,876.57/521,067.60
  6. Step 6: Final answer
    x = 376,529.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.