Finding the Fourth Proportional to 289,195.62, 399,087.18 and 161,872.26
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Solution
The fourth proportional to 289,195.62, 399,087.18 and 161,872.26 is: 223,382.17
Step by Step Solution
- Step 1: Write the proportion equation
289,195.62 : 399,087.18 = 161,872.26 : x - Step 2: Convert to fraction form
289,195.62/399,087.18 = 161,872.26/x - Step 3: Cross multiply
289,195.62x = 399,087.18 × 161,872.26 - Step 4: Simplify right side
289,195.62x = 64,601,143,763.63 - Step 5: Solve for x
x = 64,601,143,763.63/289,195.62 - Step 6: Final answer
x = 223,382.17
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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.