Home / 320,220.08-480,496.27-142,685.80

Finding the Fourth Proportional to 320,220.08, 480,496.27 and 142,685.80

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Solution

The fourth proportional to 320,220.08, 480,496.27 and 142,685.80 is: 214,102.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,220.08 : 480,496.27 = 142,685.80 : x
  2. Step 2: Convert to fraction form
    320,220.08/480,496.27 = 142,685.80/x
  3. Step 3: Cross multiply
    320,220.08x = 480,496.27 × 142,685.80
  4. Step 4: Simplify right side
    320,220.08x = 68,559,993,480.73
  5. Step 5: Solve for x
    x = 68,559,993,480.73/320,220.08
  6. Step 6: Final answer
    x = 214,102.73

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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.