Home / 280,649.39-421,039.83-191,944.67

Finding the Fourth Proportional to 280,649.39, 421,039.83 and 191,944.67

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Solution

The fourth proportional to 280,649.39, 421,039.83 and 191,944.67 is: 287,961.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,649.39 : 421,039.83 = 191,944.67 : x
  2. Step 2: Convert to fraction form
    280,649.39/421,039.83 = 191,944.67/x
  3. Step 3: Cross multiply
    280,649.39x = 421,039.83 × 191,944.67
  4. Step 4: Simplify right side
    280,649.39x = 80,816,351,226.21
  5. Step 5: Solve for x
    x = 80,816,351,226.21/280,649.39
  6. Step 6: Final answer
    x = 287,961.97

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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.