Finding the Fourth Proportional to 207,540.80, 311,408.40 and 107,813.60
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Solution
The fourth proportional to 207,540.80, 311,408.40 and 107,813.60 is: 161,770.89
Step by Step Solution
- Step 1: Write the proportion equation
207,540.80 : 311,408.40 = 107,813.60 : x - Step 2: Convert to fraction form
207,540.80/311,408.40 = 107,813.60/x - Step 3: Cross multiply
207,540.80x = 311,408.40 × 107,813.60 - Step 4: Simplify right side
207,540.80x = 33,574,060,674.24 - Step 5: Solve for x
x = 33,574,060,674.24/207,540.80 - Step 6: Final answer
x = 161,770.89
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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.