Home / 521,150.14-781,194.14-221,439.61

Finding the Fourth Proportional to 521,150.14, 781,194.14 and 221,439.61

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Solution

The fourth proportional to 521,150.14, 781,194.14 and 221,439.61 is: 331,933.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,150.14 : 781,194.14 = 221,439.61 : x
  2. Step 2: Convert to fraction form
    521,150.14/781,194.14 = 221,439.61/x
  3. Step 3: Cross multiply
    521,150.14x = 781,194.14 × 221,439.61
  4. Step 4: Simplify right side
    521,150.14x = 172,987,320,682.72
  5. Step 5: Solve for x
    x = 172,987,320,682.72/521,150.14
  6. Step 6: Final answer
    x = 331,933.75

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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.