Finding the Fourth Proportional to 394,331.76, 543,611.40 and 280,957.68
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Solution
The fourth proportional to 394,331.76, 543,611.40 and 280,957.68 is: 387,318.02
Step by Step Solution
- Step 1: Write the proportion equation
394,331.76 : 543,611.40 = 280,957.68 : x - Step 2: Convert to fraction form
394,331.76/543,611.40 = 280,957.68/x - Step 3: Cross multiply
394,331.76x = 543,611.40 × 280,957.68 - Step 4: Simplify right side
394,331.76x = 152,731,797,765.55 - Step 5: Solve for x
x = 152,731,797,765.55/394,331.76 - Step 6: Final answer
x = 387,318.02
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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.