Finding the Fourth Proportional to 206,382.64, 284,687.06 and 129,780.26
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Solution
The fourth proportional to 206,382.64, 284,687.06 and 129,780.26 is: 179,020.68
Step by Step Solution
- Step 1: Write the proportion equation
206,382.64 : 284,687.06 = 129,780.26 : x - Step 2: Convert to fraction form
206,382.64/284,687.06 = 129,780.26/x - Step 3: Cross multiply
206,382.64x = 284,687.06 × 129,780.26 - Step 4: Simplify right side
206,382.64x = 36,946,760,665.44 - Step 5: Solve for x
x = 36,946,760,665.44/206,382.64 - Step 6: Final answer
x = 179,020.68
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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.