Finding the Fourth Proportional to 225,419.12, 311,007.84 and 129,912.76
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Solution
The fourth proportional to 225,419.12, 311,007.84 and 129,912.76 is: 179,238.95
Step by Step Solution
- Step 1: Write the proportion equation
225,419.12 : 311,007.84 = 129,912.76 : x - Step 2: Convert to fraction form
225,419.12/311,007.84 = 129,912.76/x - Step 3: Cross multiply
225,419.12x = 311,007.84 × 129,912.76 - Step 4: Simplify right side
225,419.12x = 40,403,886,876.04 - Step 5: Solve for x
x = 40,403,886,876.04/225,419.12 - Step 6: Final answer
x = 179,238.95
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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.