Finding the Fourth Proportional to 396,514.05, 547,174.75 and 215,222.15
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Solution
The fourth proportional to 396,514.05, 547,174.75 and 215,222.15 is: 296,998.62
Step by Step Solution
- Step 1: Write the proportion equation
396,514.05 : 547,174.75 = 215,222.15 : x - Step 2: Convert to fraction form
396,514.05/547,174.75 = 215,222.15/x - Step 3: Cross multiply
396,514.05x = 547,174.75 × 215,222.15 - Step 4: Simplify right side
396,514.05x = 117,764,126,120.71 - Step 5: Solve for x
x = 117,764,126,120.71/396,514.05 - Step 6: Final answer
x = 296,998.62
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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.