Finding the Fourth Proportional to 396,921.20, 547,738.62 and 227,151.68
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Solution
The fourth proportional to 396,921.20, 547,738.62 and 227,151.68 is: 313,462.09
Step by Step Solution
- Step 1: Write the proportion equation
396,921.20 : 547,738.62 = 227,151.68 : x - Step 2: Convert to fraction form
396,921.20/547,738.62 = 227,151.68/x - Step 3: Cross multiply
396,921.20x = 547,738.62 × 227,151.68 - Step 4: Simplify right side
396,921.20x = 124,419,747,733.88 - Step 5: Solve for x
x = 124,419,747,733.88/396,921.20 - Step 6: Final answer
x = 313,462.09
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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.