Finding the Fourth Proportional to 312,668.62, 431,324.21 and 197,753.73
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Solution
The fourth proportional to 312,668.62, 431,324.21 and 197,753.73 is: 272,799.90
Step by Step Solution
- Step 1: Write the proportion equation
312,668.62 : 431,324.21 = 197,753.73 : x - Step 2: Convert to fraction form
312,668.62/431,324.21 = 197,753.73/x - Step 3: Cross multiply
312,668.62x = 431,324.21 × 197,753.73 - Step 4: Simplify right side
312,668.62x = 85,295,969,210.18 - Step 5: Solve for x
x = 85,295,969,210.18/312,668.62 - Step 6: Final answer
x = 272,799.90
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.