Finding the Fourth Proportional to 207,991.80, 311,888.88 and 102,687.75
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Solution
The fourth proportional to 207,991.80, 311,888.88 and 102,687.75 is: 153,982.84
Step by Step Solution
- Step 1: Write the proportion equation
207,991.80 : 311,888.88 = 102,687.75 : x - Step 2: Convert to fraction form
207,991.80/311,888.88 = 102,687.75/x - Step 3: Cross multiply
207,991.80x = 311,888.88 × 102,687.75 - Step 4: Simplify right side
207,991.80x = 32,027,167,337.22 - Step 5: Solve for x
x = 32,027,167,337.22/207,991.80 - Step 6: Final answer
x = 153,982.84
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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.