Finding the Fourth Proportional to 217,286.10, 325,819.80 and 128,566.80
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Solution
The fourth proportional to 217,286.10, 325,819.80 and 128,566.80 is: 192,785.50
Step by Step Solution
- Step 1: Write the proportion equation
217,286.10 : 325,819.80 = 128,566.80 : x - Step 2: Convert to fraction form
217,286.10/325,819.80 = 128,566.80/x - Step 3: Cross multiply
217,286.10x = 325,819.80 × 128,566.80 - Step 4: Simplify right side
217,286.10x = 41,889,609,062.64 - Step 5: Solve for x
x = 41,889,609,062.64/217,286.10 - Step 6: Final answer
x = 192,785.50
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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.