Home / 320,738.38-480,775.38-263,982.15

Finding the Fourth Proportional to 320,738.38, 480,775.38 and 263,982.15

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Solution

The fourth proportional to 320,738.38, 480,775.38 and 263,982.15 is: 395,699.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,738.38 : 480,775.38 = 263,982.15 : x
  2. Step 2: Convert to fraction form
    320,738.38/480,775.38 = 263,982.15/x
  3. Step 3: Cross multiply
    320,738.38x = 480,775.38 × 263,982.15
  4. Step 4: Simplify right side
    320,738.38x = 126,916,118,479.47
  5. Step 5: Solve for x
    x = 126,916,118,479.47/320,738.38
  6. Step 6: Final answer
    x = 395,699.82

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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.