Finding the Fourth Proportional to 219,879.82, 303,441.60 and 129,234.50
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Solution
The fourth proportional to 219,879.82, 303,441.60 and 129,234.50 is: 178,347.99
Step by Step Solution
- Step 1: Write the proportion equation
219,879.82 : 303,441.60 = 129,234.50 : x - Step 2: Convert to fraction form
219,879.82/303,441.60 = 129,234.50/x - Step 3: Cross multiply
219,879.82x = 303,441.60 × 129,234.50 - Step 4: Simplify right side
219,879.82x = 39,215,123,455.20 - Step 5: Solve for x
x = 39,215,123,455.20/219,879.82 - Step 6: Final answer
x = 178,347.99
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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.