Finding the Fourth Proportional to 207,830.40, 311,891.40 and 133,132.20
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Solution
The fourth proportional to 207,830.40, 311,891.40 and 133,132.20 is: 199,791.70
Step by Step Solution
- Step 1: Write the proportion equation
207,830.40 : 311,891.40 = 133,132.20 : x - Step 2: Convert to fraction form
207,830.40/311,891.40 = 133,132.20/x - Step 3: Cross multiply
207,830.40x = 311,891.40 × 133,132.20 - Step 4: Simplify right side
207,830.40x = 41,522,788,243.08 - Step 5: Solve for x
x = 41,522,788,243.08/207,830.40 - Step 6: Final answer
x = 199,791.70
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1.5x scale
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.