Finding the Fourth Proportional to 396,715.42, 547,465.29 and 215,425.73
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Solution
The fourth proportional to 396,715.42, 547,465.29 and 215,425.73 is: 297,286.43
Step by Step Solution
- Step 1: Write the proportion equation
396,715.42 : 547,465.29 = 215,425.73 : x - Step 2: Convert to fraction form
396,715.42/547,465.29 = 215,425.73/x - Step 3: Cross multiply
396,715.42x = 547,465.29 × 215,425.73 - Step 4: Simplify right side
396,715.42x = 117,938,109,747.91 - Step 5: Solve for x
x = 117,938,109,747.91/396,715.42 - Step 6: Final answer
x = 297,286.43
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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.