Home / 320,060.05-480,161.55-120,382.15

Finding the Fourth Proportional to 320,060.05, 480,161.55 and 120,382.15

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Solution

The fourth proportional to 320,060.05, 480,161.55 and 120,382.15 is: 180,600.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,060.05 : 480,161.55 = 120,382.15 : x
  2. Step 2: Convert to fraction form
    320,060.05/480,161.55 = 120,382.15/x
  3. Step 3: Cross multiply
    320,060.05x = 480,161.55 × 120,382.15
  4. Step 4: Simplify right side
    320,060.05x = 57,802,879,736.33
  5. Step 5: Solve for x
    x = 57,802,879,736.33/320,060.05
  6. Step 6: Final answer
    x = 180,600.11

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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.