Finding the Fourth Proportional to 220,086.31, 303,720.37 and 129,446.09
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Solution
The fourth proportional to 220,086.31, 303,720.37 and 129,446.09 is: 178,636.35
Step by Step Solution
- Step 1: Write the proportion equation
220,086.31 : 303,720.37 = 129,446.09 : x - Step 2: Convert to fraction form
220,086.31/303,720.37 = 129,446.09/x - Step 3: Cross multiply
220,086.31x = 303,720.37 × 129,446.09 - Step 4: Simplify right side
220,086.31x = 39,315,414,785.54 - Step 5: Solve for x
x = 39,315,414,785.54/220,086.31 - Step 6: Final answer
x = 178,636.35
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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.