Home / 225,620.18-311,322.20-139,665.62

Finding the Fourth Proportional to 225,620.18, 311,322.20 and 139,665.62

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Solution

The fourth proportional to 225,620.18, 311,322.20 and 139,665.62 is: 192,717.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,620.18 : 311,322.20 = 139,665.62 : x
  2. Step 2: Convert to fraction form
    225,620.18/311,322.20 = 139,665.62/x
  3. Step 3: Cross multiply
    225,620.18x = 311,322.20 × 139,665.62
  4. Step 4: Simplify right side
    225,620.18x = 43,481,008,082.76
  5. Step 5: Solve for x
    x = 43,481,008,082.76/225,620.18
  6. Step 6: Final answer
    x = 192,717.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.