Finding the Fourth Proportional to 209,405.93, 288,979.96 and 113,912.40
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Solution
The fourth proportional to 209,405.93, 288,979.96 and 113,912.40 is: 157,198.99
Step by Step Solution
- Step 1: Write the proportion equation
209,405.93 : 288,979.96 = 113,912.40 : x - Step 2: Convert to fraction form
209,405.93/288,979.96 = 113,912.40/x - Step 3: Cross multiply
209,405.93x = 288,979.96 × 113,912.40 - Step 4: Simplify right side
209,405.93x = 32,918,399,492.99 - Step 5: Solve for x
x = 32,918,399,492.99/209,405.93 - Step 6: Final answer
x = 157,198.99
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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.