Finding the Fourth Proportional to 396,458.82, 547,117.11 and 215,172.36
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Solution
The fourth proportional to 396,458.82, 547,117.11 and 215,172.36 is: 296,939.99
Step by Step Solution
- Step 1: Write the proportion equation
396,458.82 : 547,117.11 = 215,172.36 : x - Step 2: Convert to fraction form
396,458.82/547,117.11 = 215,172.36/x - Step 3: Cross multiply
396,458.82x = 547,117.11 × 215,172.36 - Step 4: Simplify right side
396,458.82x = 117,724,479,755.08 - Step 5: Solve for x
x = 117,724,479,755.08/396,458.82 - Step 6: Final answer
x = 296,939.99
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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.