Finding the Fourth Proportional to 280,713.10, 421,236.42 and 103,344.70
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Solution
The fourth proportional to 280,713.10, 421,236.42 and 103,344.70 is: 155,078.45
Step by Step Solution
- Step 1: Write the proportion equation
280,713.10 : 421,236.42 = 103,344.70 : x - Step 2: Convert to fraction form
280,713.10/421,236.42 = 103,344.70/x - Step 3: Cross multiply
280,713.10x = 421,236.42 × 103,344.70 - Step 4: Simplify right side
280,713.10x = 43,532,551,453.97 - Step 5: Solve for x
x = 43,532,551,453.97/280,713.10 - Step 6: Final answer
x = 155,078.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.