Finding the Fourth Proportional to 207,722.40, 311,583.60 and 74,623.20
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Solution
The fourth proportional to 207,722.40, 311,583.60 and 74,623.20 is: 111,934.80
Step by Step Solution
- Step 1: Write the proportion equation
207,722.40 : 311,583.60 = 74,623.20 : x - Step 2: Convert to fraction form
207,722.40/311,583.60 = 74,623.20/x - Step 3: Cross multiply
207,722.40x = 311,583.60 × 74,623.20 - Step 4: Simplify right side
207,722.40x = 23,251,365,299.52 - Step 5: Solve for x
x = 23,251,365,299.52/207,722.40 - Step 6: Final answer
x = 111,934.80
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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.