Finding the Fourth Proportional to 396,703.74, 547,449.44 and 215,414.20
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Solution
The fourth proportional to 396,703.74, 547,449.44 and 215,414.20 is: 297,270.66
Step by Step Solution
- Step 1: Write the proportion equation
396,703.74 : 547,449.44 = 215,414.20 : x - Step 2: Convert to fraction form
396,703.74/547,449.44 = 215,414.20/x - Step 3: Cross multiply
396,703.74x = 547,449.44 × 215,414.20 - Step 4: Simplify right side
396,703.74x = 117,928,382,765.29 - Step 5: Solve for x
x = 117,928,382,765.29/396,703.74 - Step 6: Final answer
x = 297,270.66
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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.