Finding the Fourth Proportional to 396,408.80, 547,045.58 and 215,120.68
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Solution
The fourth proportional to 396,408.80, 547,045.58 and 215,120.68 is: 296,867.31
Step by Step Solution
- Step 1: Write the proportion equation
396,408.80 : 547,045.58 = 215,120.68 : x - Step 2: Convert to fraction form
396,408.80/547,045.58 = 215,120.68/x - Step 3: Cross multiply
396,408.80x = 547,045.58 × 215,120.68 - Step 4: Simplify right side
396,408.80x = 117,680,816,330.78 - Step 5: Solve for x
x = 117,680,816,330.78/396,408.80 - Step 6: Final answer
x = 296,867.31
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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.