Finding the Fourth Proportional to 209,161.26, 288,644.37 and 113,667.95
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Solution
The fourth proportional to 209,161.26, 288,644.37 and 113,667.95 is: 156,862.77
Step by Step Solution
- Step 1: Write the proportion equation
209,161.26 : 288,644.37 = 113,667.95 : x - Step 2: Convert to fraction form
209,161.26/288,644.37 = 113,667.95/x - Step 3: Cross multiply
209,161.26x = 288,644.37 × 113,667.95 - Step 4: Simplify right side
209,161.26x = 32,809,613,816.94 - Step 5: Solve for x
x = 32,809,613,816.94/209,161.26 - Step 6: Final answer
x = 156,862.77
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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.