Finding the Fourth Proportional to 311,682.20, 430,121.52 and 177,546.20
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Solution
The fourth proportional to 311,682.20, 430,121.52 and 177,546.20 is: 245,013.80
Step by Step Solution
- Step 1: Write the proportion equation
311,682.20 : 430,121.52 = 177,546.20 : x - Step 2: Convert to fraction form
311,682.20/430,121.52 = 177,546.20/x - Step 3: Cross multiply
311,682.20x = 430,121.52 × 177,546.20 - Step 4: Simplify right side
311,682.20x = 76,366,439,263.62 - Step 5: Solve for x
x = 76,366,439,263.62/311,682.20 - Step 6: Final answer
x = 245,013.80
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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.