Finding the Fourth Proportional to 206,408.20, 284,859.84 and 121,541.80
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Solution
The fourth proportional to 206,408.20, 284,859.84 and 121,541.80 is: 167,737.41
Step by Step Solution
- Step 1: Write the proportion equation
206,408.20 : 284,859.84 = 121,541.80 : x - Step 2: Convert to fraction form
206,408.20/284,859.84 = 121,541.80/x - Step 3: Cross multiply
206,408.20x = 284,859.84 × 121,541.80 - Step 4: Simplify right side
206,408.20x = 34,622,377,701.31 - Step 5: Solve for x
x = 34,622,377,701.31/206,408.20 - Step 6: Final answer
x = 167,737.41
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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.