Finding the Fourth Proportional to 207,961.20, 311,941.80 and 181,717.20
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Solution
The fourth proportional to 207,961.20, 311,941.80 and 181,717.20 is: 272,575.80
Step by Step Solution
- Step 1: Write the proportion equation
207,961.20 : 311,941.80 = 181,717.20 : x - Step 2: Convert to fraction form
207,961.20/311,941.80 = 181,717.20/x - Step 3: Cross multiply
207,961.20x = 311,941.80 × 181,717.20 - Step 4: Simplify right side
207,961.20x = 56,685,190,458.96 - Step 5: Solve for x
x = 56,685,190,458.96/207,961.20 - Step 6: Final answer
x = 272,575.80
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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.