Finding the Fourth Proportional to 398,020.72, 548,334.10 and 276,954.08
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Solution
The fourth proportional to 398,020.72, 548,334.10 and 276,954.08 is: 381,546.38
Step by Step Solution
- Step 1: Write the proportion equation
398,020.72 : 548,334.10 = 276,954.08 : x - Step 2: Convert to fraction form
398,020.72/548,334.10 = 276,954.08/x - Step 3: Cross multiply
398,020.72x = 548,334.10 × 276,954.08 - Step 4: Simplify right side
398,020.72x = 151,863,366,198.13 - Step 5: Solve for x
x = 151,863,366,198.13/398,020.72 - Step 6: Final answer
x = 381,546.38
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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.