Finding the Fourth Proportional to 396,408.83, 547,044.53 and 215,120.75
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Solution
The fourth proportional to 396,408.83, 547,044.53 and 215,120.75 is: 296,866.82
Step by Step Solution
- Step 1: Write the proportion equation
396,408.83 : 547,044.53 = 215,120.75 : x - Step 2: Convert to fraction form
396,408.83/547,044.53 = 215,120.75/x - Step 3: Cross multiply
396,408.83x = 547,044.53 × 215,120.75 - Step 4: Simplify right side
396,408.83x = 117,680,625,766.17 - Step 5: Solve for x
x = 117,680,625,766.17/396,408.83 - Step 6: Final answer
x = 296,866.82
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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.