Finding the Fourth Proportional to 198,861.22, 274,428.99 and 108,217.15
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Solution
The fourth proportional to 198,861.22, 274,428.99 and 108,217.15 is: 149,339.94
Step by Step Solution
- Step 1: Write the proportion equation
198,861.22 : 274,428.99 = 108,217.15 : x - Step 2: Convert to fraction form
198,861.22/274,428.99 = 108,217.15/x - Step 3: Cross multiply
198,861.22x = 274,428.99 × 108,217.15 - Step 4: Simplify right side
198,861.22x = 29,697,923,175.18 - Step 5: Solve for x
x = 29,697,923,175.18/198,861.22 - Step 6: Final answer
x = 149,339.94
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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.