Finding the Fourth Proportional to 209,517.57, 289,083.81 and 123,479.97
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Solution
The fourth proportional to 209,517.57, 289,083.81 and 123,479.97 is: 170,372.63
Step by Step Solution
- Step 1: Write the proportion equation
209,517.57 : 289,083.81 = 123,479.97 : x - Step 2: Convert to fraction form
209,517.57/289,083.81 = 123,479.97/x - Step 3: Cross multiply
209,517.57x = 289,083.81 × 123,479.97 - Step 4: Simplify right side
209,517.57x = 35,696,060,186.29 - Step 5: Solve for x
x = 35,696,060,186.29/209,517.57 - Step 6: Final answer
x = 170,372.63
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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.