Home / 491,154.21-677,791.75-276,294.27

Finding the Fourth Proportional to 491,154.21, 677,791.75 and 276,294.27

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Solution

The fourth proportional to 491,154.21, 677,791.75 and 276,294.27 is: 381,285.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,154.21 : 677,791.75 = 276,294.27 : x
  2. Step 2: Convert to fraction form
    491,154.21/677,791.75 = 276,294.27/x
  3. Step 3: Cross multiply
    491,154.21x = 677,791.75 × 276,294.27
  4. Step 4: Simplify right side
    491,154.21x = 187,269,973,428.44
  5. Step 5: Solve for x
    x = 187,269,973,428.44/491,154.21
  6. Step 6: Final answer
    x = 381,285.49

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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.