Finding the Fourth Proportional to 642,163.44, 963,435.24 and 221,481.84
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Solution
The fourth proportional to 642,163.44, 963,435.24 and 221,481.84 is: 332,288.32
Step by Step Solution
- Step 1: Write the proportion equation
642,163.44 : 963,435.24 = 221,481.84 : x - Step 2: Convert to fraction form
642,163.44/963,435.24 = 221,481.84/x - Step 3: Cross multiply
642,163.44x = 963,435.24 × 221,481.84 - Step 4: Simplify right side
642,163.44x = 213,383,409,676.04 - Step 5: Solve for x
x = 213,383,409,676.04/642,163.44 - Step 6: Final answer
x = 332,288.32
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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.