Finding the Fourth Proportional to 207,908.70, 311,863.05 and 199,743.90
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Solution
The fourth proportional to 207,908.70, 311,863.05 and 199,743.90 is: 299,615.85
Step by Step Solution
- Step 1: Write the proportion equation
207,908.70 : 311,863.05 = 199,743.90 : x - Step 2: Convert to fraction form
207,908.70/311,863.05 = 199,743.90/x - Step 3: Cross multiply
207,908.70x = 311,863.05 × 199,743.90 - Step 4: Simplify right side
207,908.70x = 62,292,741,872.90 - Step 5: Solve for x
x = 62,292,741,872.90/207,908.70 - Step 6: Final answer
x = 299,615.85
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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.