Finding the Fourth Proportional to 225,542.26, 311,171.68 and 128,676.53
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Solution
The fourth proportional to 225,542.26, 311,171.68 and 128,676.53 is: 177,529.88
Step by Step Solution
- Step 1: Write the proportion equation
225,542.26 : 311,171.68 = 128,676.53 : x - Step 2: Convert to fraction form
225,542.26/311,171.68 = 128,676.53/x - Step 3: Cross multiply
225,542.26x = 311,171.68 × 128,676.53 - Step 4: Simplify right side
225,542.26x = 40,040,490,380.39 - Step 5: Solve for x
x = 40,040,490,380.39/225,542.26 - Step 6: Final answer
x = 177,529.88
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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.