Finding the Fourth Proportional to 398,812.75, 550,361.64 and 219,964.75
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Solution
The fourth proportional to 398,812.75, 550,361.64 and 219,964.75 is: 303,551.38
Step by Step Solution
- Step 1: Write the proportion equation
398,812.75 : 550,361.64 = 219,964.75 : x - Step 2: Convert to fraction form
398,812.75/550,361.64 = 219,964.75/x - Step 3: Cross multiply
398,812.75x = 550,361.64 × 219,964.75 - Step 4: Simplify right side
398,812.75x = 121,060,160,552.19 - Step 5: Solve for x
x = 121,060,160,552.19/398,812.75 - Step 6: Final answer
x = 303,551.38
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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.