Finding the Fourth Proportional to 203,939.24, 305,855.40 and 91,556.60
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Solution
The fourth proportional to 203,939.24, 305,855.40 and 91,556.60 is: 137,310.90
Step by Step Solution
- Step 1: Write the proportion equation
203,939.24 : 305,855.40 = 91,556.60 : x - Step 2: Convert to fraction form
203,939.24/305,855.40 = 91,556.60/x - Step 3: Cross multiply
203,939.24x = 305,855.40 × 91,556.60 - Step 4: Simplify right side
203,939.24x = 28,003,080,515.64 - Step 5: Solve for x
x = 28,003,080,515.64/203,939.24 - Step 6: Final answer
x = 137,310.90
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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.