Finding the Fourth Proportional to 396,761.13, 547,530.21 and 215,473.12
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Solution
The fourth proportional to 396,761.13, 547,530.21 and 215,473.12 is: 297,352.82
Step by Step Solution
- Step 1: Write the proportion equation
396,761.13 : 547,530.21 = 215,473.12 : x - Step 2: Convert to fraction form
396,761.13/547,530.21 = 215,473.12/x - Step 3: Cross multiply
396,761.13x = 547,530.21 × 215,473.12 - Step 4: Simplify right side
396,761.13x = 117,978,041,274.13 - Step 5: Solve for x
x = 117,978,041,274.13/396,761.13 - Step 6: Final answer
x = 297,352.82
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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.