Home / 322,788.24-484,182.40-86,131.80

Finding the Fourth Proportional to 322,788.24, 484,182.40 and 86,131.80

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Solution

The fourth proportional to 322,788.24, 484,182.40 and 86,131.80 is: 129,197.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,788.24 : 484,182.40 = 86,131.80 : x
  2. Step 2: Convert to fraction form
    322,788.24/484,182.40 = 86,131.80/x
  3. Step 3: Cross multiply
    322,788.24x = 484,182.40 × 86,131.80
  4. Step 4: Simplify right side
    322,788.24x = 41,703,501,640.32
  5. Step 5: Solve for x
    x = 41,703,501,640.32/322,788.24
  6. Step 6: Final answer
    x = 129,197.71

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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.