Finding the Fourth Proportional to 396,409.26, 547,045.13 and 215,121.19
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Solution
The fourth proportional to 396,409.26, 547,045.13 and 215,121.19 is: 296,867.43
Step by Step Solution
- Step 1: Write the proportion equation
396,409.26 : 547,045.13 = 215,121.19 : x - Step 2: Convert to fraction form
396,409.26/547,045.13 = 215,121.19/x - Step 3: Cross multiply
396,409.26x = 547,045.13 × 215,121.19 - Step 4: Simplify right side
396,409.26x = 117,680,999,349.31 - Step 5: Solve for x
x = 117,680,999,349.31/396,409.26 - Step 6: Final answer
x = 296,867.43
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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.