Finding the Fourth Proportional to 198,415.20, 297,622.80 and 115,471.20
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Solution
The fourth proportional to 198,415.20, 297,622.80 and 115,471.20 is: 173,206.80
Step by Step Solution
- Step 1: Write the proportion equation
198,415.20 : 297,622.80 = 115,471.20 : x - Step 2: Convert to fraction form
198,415.20/297,622.80 = 115,471.20/x - Step 3: Cross multiply
198,415.20x = 297,622.80 × 115,471.20 - Step 4: Simplify right side
198,415.20x = 34,366,861,863.36 - Step 5: Solve for x
x = 34,366,861,863.36/198,415.20 - Step 6: Final answer
x = 173,206.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.