Finding the Fourth Proportional to 220,248.75, 303,917.49 and 129,584.78
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Solution
The fourth proportional to 220,248.75, 303,917.49 and 129,584.78 is: 178,811.82
Step by Step Solution
- Step 1: Write the proportion equation
220,248.75 : 303,917.49 = 129,584.78 : x - Step 2: Convert to fraction form
220,248.75/303,917.49 = 129,584.78/x - Step 3: Cross multiply
220,248.75x = 303,917.49 × 129,584.78 - Step 4: Simplify right side
220,248.75x = 39,383,079,560.21 - Step 5: Solve for x
x = 39,383,079,560.21/220,248.75 - Step 6: Final answer
x = 178,811.82
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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.