Finding the Fourth Proportional to 217,321.10, 325,872.30 and 128,601.80
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Solution
The fourth proportional to 217,321.10, 325,872.30 and 128,601.80 is: 192,837.99
Step by Step Solution
- Step 1: Write the proportion equation
217,321.10 : 325,872.30 = 128,601.80 : x - Step 2: Convert to fraction form
217,321.10/325,872.30 = 128,601.80/x - Step 3: Cross multiply
217,321.10x = 325,872.30 × 128,601.80 - Step 4: Simplify right side
217,321.10x = 41,907,764,350.14 - Step 5: Solve for x
x = 41,907,764,350.14/217,321.10 - Step 6: Final answer
x = 192,837.99
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1.5x scale
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.