Finding the Fourth Proportional to 226,115.28, 312,063.84 and 129,328.02
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Solution
The fourth proportional to 226,115.28, 312,063.84 and 129,328.02 is: 178,486.83
Step by Step Solution
- Step 1: Write the proportion equation
226,115.28 : 312,063.84 = 129,328.02 : x - Step 2: Convert to fraction form
226,115.28/312,063.84 = 129,328.02/x - Step 3: Cross multiply
226,115.28x = 312,063.84 × 129,328.02 - Step 4: Simplify right side
226,115.28x = 40,358,598,540.80 - Step 5: Solve for x
x = 40,358,598,540.80/226,115.28 - Step 6: Final answer
x = 178,486.83
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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.