Home / 381,021.44-571,459.28-191,429.27

Finding the Fourth Proportional to 381,021.44, 571,459.28 and 191,429.27

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Solution

The fourth proportional to 381,021.44, 571,459.28 and 191,429.27 is: 287,107.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,021.44 : 571,459.28 = 191,429.27 : x
  2. Step 2: Convert to fraction form
    381,021.44/571,459.28 = 191,429.27/x
  3. Step 3: Cross multiply
    381,021.44x = 571,459.28 × 191,429.27
  4. Step 4: Simplify right side
    381,021.44x = 109,394,028,990.68
  5. Step 5: Solve for x
    x = 109,394,028,990.68/381,021.44
  6. Step 6: Final answer
    x = 287,107.28

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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.