Finding the Fourth Proportional to 207,728.36, 311,548.78 and 74,616.20
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Solution
The fourth proportional to 207,728.36, 311,548.78 and 74,616.20 is: 111,908.58
Step by Step Solution
- Step 1: Write the proportion equation
207,728.36 : 311,548.78 = 74,616.20 : x - Step 2: Convert to fraction form
207,728.36/311,548.78 = 74,616.20/x - Step 3: Cross multiply
207,728.36x = 311,548.78 × 74,616.20 - Step 4: Simplify right side
207,728.36x = 23,246,586,078.24 - Step 5: Solve for x
x = 23,246,586,078.24/207,728.36 - Step 6: Final answer
x = 111,908.58
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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.