Finding the Fourth Proportional to 396,394.12, 547,021.12 and 215,101.44
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Solution
The fourth proportional to 396,394.12, 547,021.12 and 215,101.44 is: 296,838.49
Step by Step Solution
- Step 1: Write the proportion equation
396,394.12 : 547,021.12 = 215,101.44 : x - Step 2: Convert to fraction form
396,394.12/547,021.12 = 215,101.44/x - Step 3: Cross multiply
396,394.12x = 547,021.12 × 215,101.44 - Step 4: Simplify right side
396,394.12x = 117,665,030,622.41 - Step 5: Solve for x
x = 117,665,030,622.41/396,394.12 - Step 6: Final answer
x = 296,838.49
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1.5x scale
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.