Home / 320,865.32-481,296.69-80,979.77

Finding the Fourth Proportional to 320,865.32, 481,296.69 and 80,979.77

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Solution

The fourth proportional to 320,865.32, 481,296.69 and 80,979.77 is: 121,469.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,865.32 : 481,296.69 = 80,979.77 : x
  2. Step 2: Convert to fraction form
    320,865.32/481,296.69 = 80,979.77/x
  3. Step 3: Cross multiply
    320,865.32x = 481,296.69 × 80,979.77
  4. Step 4: Simplify right side
    320,865.32x = 38,975,295,257.96
  5. Step 5: Solve for x
    x = 38,975,295,257.96/320,865.32
  6. Step 6: Final answer
    x = 121,469.33

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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.