Home / 391,195.24-539,862.72-219,120.60

Finding the Fourth Proportional to 391,195.24, 539,862.72 and 219,120.60

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Solution

The fourth proportional to 391,195.24, 539,862.72 and 219,120.60 is: 302,393.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,195.24 : 539,862.72 = 219,120.60 : x
  2. Step 2: Convert to fraction form
    391,195.24/539,862.72 = 219,120.60/x
  3. Step 3: Cross multiply
    391,195.24x = 539,862.72 × 219,120.60
  4. Step 4: Simplify right side
    391,195.24x = 118,295,040,424.72
  5. Step 5: Solve for x
    x = 118,295,040,424.72/391,195.24
  6. Step 6: Final answer
    x = 302,393.86

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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.