Finding the Fourth Proportional to 207,915.20, 311,872.80 and 194,793.20
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Solution
The fourth proportional to 207,915.20, 311,872.80 and 194,793.20 is: 292,189.80
Step by Step Solution
- Step 1: Write the proportion equation
207,915.20 : 311,872.80 = 194,793.20 : x - Step 2: Convert to fraction form
207,915.20/311,872.80 = 194,793.20/x - Step 3: Cross multiply
207,915.20x = 311,872.80 × 194,793.20 - Step 4: Simplify right side
207,915.20x = 60,750,700,704.96 - Step 5: Solve for x
x = 60,750,700,704.96/207,915.20 - Step 6: Final answer
x = 292,189.80
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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.