Home / 221,072.20-331,632.60-80,861.20

Finding the Fourth Proportional to 221,072.20, 331,632.60 and 80,861.20

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Solution

The fourth proportional to 221,072.20, 331,632.60 and 80,861.20 is: 121,300.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,072.20 : 331,632.60 = 80,861.20 : x
  2. Step 2: Convert to fraction form
    221,072.20/331,632.60 = 80,861.20/x
  3. Step 3: Cross multiply
    221,072.20x = 331,632.60 × 80,861.20
  4. Step 4: Simplify right side
    221,072.20x = 26,816,209,995.12
  5. Step 5: Solve for x
    x = 26,816,209,995.12/221,072.20
  6. Step 6: Final answer
    x = 121,300.69

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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.