Finding the Fourth Proportional to 209,249.87, 288,768.11 and 113,756.94
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Solution
The fourth proportional to 209,249.87, 288,768.11 and 113,756.94 is: 156,986.37
Step by Step Solution
- Step 1: Write the proportion equation
209,249.87 : 288,768.11 = 113,756.94 : x - Step 2: Convert to fraction form
209,249.87/288,768.11 = 113,756.94/x - Step 3: Cross multiply
209,249.87x = 288,768.11 × 113,756.94 - Step 4: Simplify right side
209,249.87x = 32,849,375,994.40 - Step 5: Solve for x
x = 32,849,375,994.40/209,249.87 - Step 6: Final answer
x = 156,986.37
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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.