Finding the Fourth Proportional to 198,503.40, 297,755.10 and 135,517.80
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Solution
The fourth proportional to 198,503.40, 297,755.10 and 135,517.80 is: 203,276.70
Step by Step Solution
- Step 1: Write the proportion equation
198,503.40 : 297,755.10 = 135,517.80 : x - Step 2: Convert to fraction form
198,503.40/297,755.10 = 135,517.80/x - Step 3: Cross multiply
198,503.40x = 297,755.10 × 135,517.80 - Step 4: Simplify right side
198,503.40x = 40,351,116,090.78 - Step 5: Solve for x
x = 40,351,116,090.78/198,503.40 - Step 6: Final answer
x = 203,276.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.