Finding the Fourth Proportional to 207,909.70, 311,864.55 and 194,787.70
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Solution
The fourth proportional to 207,909.70, 311,864.55 and 194,787.70 is: 292,181.55
Step by Step Solution
- Step 1: Write the proportion equation
207,909.70 : 311,864.55 = 194,787.70 : x - Step 2: Convert to fraction form
207,909.70/311,864.55 = 194,787.70/x - Step 3: Cross multiply
207,909.70x = 311,864.55 × 194,787.70 - Step 4: Simplify right side
207,909.70x = 60,747,378,406.04 - Step 5: Solve for x
x = 60,747,378,406.04/207,909.70 - Step 6: Final answer
x = 292,181.55
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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.