Finding the Fourth Proportional to 207,619.80, 311,429.70 and 193,795.80
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Solution
The fourth proportional to 207,619.80, 311,429.70 and 193,795.80 is: 290,693.70
Step by Step Solution
- Step 1: Write the proportion equation
207,619.80 : 311,429.70 = 193,795.80 : x - Step 2: Convert to fraction form
207,619.80/311,429.70 = 193,795.80/x - Step 3: Cross multiply
207,619.80x = 311,429.70 × 193,795.80 - Step 4: Simplify right side
207,619.80x = 60,353,767,855.26 - Step 5: Solve for x
x = 60,353,767,855.26/207,619.80 - Step 6: Final answer
x = 290,693.70
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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.