Home / 320,217.97-480,405.75-225,632.89

Finding the Fourth Proportional to 320,217.97, 480,405.75 and 225,632.89

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Solution

The fourth proportional to 320,217.97, 480,405.75 and 225,632.89 is: 338,504.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,217.97 : 480,405.75 = 225,632.89 : x
  2. Step 2: Convert to fraction form
    320,217.97/480,405.75 = 225,632.89/x
  3. Step 3: Cross multiply
    320,217.97x = 480,405.75 × 225,632.89
  4. Step 4: Simplify right side
    320,217.97x = 108,395,337,745.12
  5. Step 5: Solve for x
    x = 108,395,337,745.12/320,217.97
  6. Step 6: Final answer
    x = 338,504.86

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1.5x scale

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.