Finding the Fourth Proportional to 207,966.20, 311,949.30 and 113,487.80
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Solution
The fourth proportional to 207,966.20, 311,949.30 and 113,487.80 is: 170,231.70
Step by Step Solution
- Step 1: Write the proportion equation
207,966.20 : 311,949.30 = 113,487.80 : x - Step 2: Convert to fraction form
207,966.20/311,949.30 = 113,487.80/x - Step 3: Cross multiply
207,966.20x = 311,949.30 × 113,487.80 - Step 4: Simplify right side
207,966.20x = 35,402,439,768.54 - Step 5: Solve for x
x = 35,402,439,768.54/207,966.20 - Step 6: Final answer
x = 170,231.70
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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.