Finding the Fourth Proportional to 207,934.20, 311,901.30 and 113,455.80
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Solution
The fourth proportional to 207,934.20, 311,901.30 and 113,455.80 is: 170,183.70
Step by Step Solution
- Step 1: Write the proportion equation
207,934.20 : 311,901.30 = 113,455.80 : x - Step 2: Convert to fraction form
207,934.20/311,901.30 = 113,455.80/x - Step 3: Cross multiply
207,934.20x = 311,901.30 × 113,455.80 - Step 4: Simplify right side
207,934.20x = 35,387,011,512.54 - Step 5: Solve for x
x = 35,387,011,512.54/207,934.20 - Step 6: Final answer
x = 170,183.70
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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.