Home / 225,738.09-311,550.30-139,724.67

Finding the Fourth Proportional to 225,738.09, 311,550.30 and 139,724.67

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Solution

The fourth proportional to 225,738.09, 311,550.30 and 139,724.67 is: 192,839.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,738.09 : 311,550.30 = 139,724.67 : x
  2. Step 2: Convert to fraction form
    225,738.09/311,550.30 = 139,724.67/x
  3. Step 3: Cross multiply
    225,738.09x = 311,550.30 × 139,724.67
  4. Step 4: Simplify right side
    225,738.09x = 43,531,262,855.90
  5. Step 5: Solve for x
    x = 43,531,262,855.90/225,738.09
  6. Step 6: Final answer
    x = 192,839.69

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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.