Home / 320,240.24-480,101.12-133,391.60

Finding the Fourth Proportional to 320,240.24, 480,101.12 and 133,391.60

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Solution

The fourth proportional to 320,240.24, 480,101.12 and 133,391.60 is: 199,979.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,240.24 : 480,101.12 = 133,391.60 : x
  2. Step 2: Convert to fraction form
    320,240.24/480,101.12 = 133,391.60/x
  3. Step 3: Cross multiply
    320,240.24x = 480,101.12 × 133,391.60
  4. Step 4: Simplify right side
    320,240.24x = 64,041,456,558.59
  5. Step 5: Solve for x
    x = 64,041,456,558.59/320,240.24
  6. Step 6: Final answer
    x = 199,979.42

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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.