Finding the Fourth Proportional to 235,861.20, 353,791.80 and 157,129.20
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Solution
The fourth proportional to 235,861.20, 353,791.80 and 157,129.20 is: 235,693.80
Step by Step Solution
- Step 1: Write the proportion equation
235,861.20 : 353,791.80 = 157,129.20 : x - Step 2: Convert to fraction form
235,861.20/353,791.80 = 157,129.20/x - Step 3: Cross multiply
235,861.20x = 353,791.80 × 157,129.20 - Step 4: Simplify right side
235,861.20x = 55,591,022,500.56 - Step 5: Solve for x
x = 55,591,022,500.56/235,861.20 - Step 6: Final answer
x = 235,693.80
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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.