Finding the Fourth Proportional to 398,018.70, 548,331.39 and 276,952.05
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Solution
The fourth proportional to 398,018.70, 548,331.39 and 276,952.05 is: 381,543.64
Step by Step Solution
- Step 1: Write the proportion equation
398,018.70 : 548,331.39 = 276,952.05 : x - Step 2: Convert to fraction form
398,018.70/548,331.39 = 276,952.05/x - Step 3: Cross multiply
398,018.70x = 548,331.39 × 276,952.05 - Step 4: Simplify right side
398,018.70x = 151,861,502,539.85 - Step 5: Solve for x
x = 151,861,502,539.85/398,018.70 - Step 6: Final answer
x = 381,543.64
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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.