Finding the Fourth Proportional to 207,974.40, 311,378.40 and 202,142.40
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Solution
The fourth proportional to 207,974.40, 311,378.40 and 202,142.40 is: 302,646.75
Step by Step Solution
- Step 1: Write the proportion equation
207,974.40 : 311,378.40 = 202,142.40 : x - Step 2: Convert to fraction form
207,974.40/311,378.40 = 202,142.40/x - Step 3: Cross multiply
207,974.40x = 311,378.40 × 202,142.40 - Step 4: Simplify right side
207,974.40x = 62,942,777,084.16 - Step 5: Solve for x
x = 62,942,777,084.16/207,974.40 - Step 6: Final answer
x = 302,646.75
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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.