Finding the Fourth Proportional to 209,205.42, 288,691.26 and 113,711.28
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Solution
The fourth proportional to 209,205.42, 288,691.26 and 113,711.28 is: 156,914.92
Step by Step Solution
- Step 1: Write the proportion equation
209,205.42 : 288,691.26 = 113,711.28 : x - Step 2: Convert to fraction form
209,205.42/288,691.26 = 113,711.28/x - Step 3: Cross multiply
209,205.42x = 288,691.26 × 113,711.28 - Step 4: Simplify right side
209,205.42x = 32,827,452,699.41 - Step 5: Solve for x
x = 32,827,452,699.41/209,205.42 - Step 6: Final answer
x = 156,914.92
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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.