Finding the Fourth Proportional to 206,891.52, 310,491.84 and 80,551.68
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Solution
The fourth proportional to 206,891.52, 310,491.84 and 80,551.68 is: 120,887.70
Step by Step Solution
- Step 1: Write the proportion equation
206,891.52 : 310,491.84 = 80,551.68 : x - Step 2: Convert to fraction form
206,891.52/310,491.84 = 80,551.68/x - Step 3: Cross multiply
206,891.52x = 310,491.84 × 80,551.68 - Step 4: Simplify right side
206,891.52x = 25,010,639,338.29 - Step 5: Solve for x
x = 25,010,639,338.29/206,891.52 - Step 6: Final answer
x = 120,887.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.