Finding the Fourth Proportional to 207,916.80, 311,875.20 and 193,171.20
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Solution
The fourth proportional to 207,916.80, 311,875.20 and 193,171.20 is: 289,756.80
Step by Step Solution
- Step 1: Write the proportion equation
207,916.80 : 311,875.20 = 193,171.20 : x - Step 2: Convert to fraction form
207,916.80/311,875.20 = 193,171.20/x - Step 3: Cross multiply
207,916.80x = 311,875.20 × 193,171.20 - Step 4: Simplify right side
207,916.80x = 60,245,306,634.24 - Step 5: Solve for x
x = 60,245,306,634.24/207,916.80 - Step 6: Final answer
x = 289,756.80
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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.