Finding the Fourth Proportional to 207,843.10, 311,639.70 and 81,332.44
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Solution
The fourth proportional to 207,843.10, 311,639.70 and 81,332.44 is: 121,949.76
Step by Step Solution
- Step 1: Write the proportion equation
207,843.10 : 311,639.70 = 81,332.44 : x - Step 2: Convert to fraction form
207,843.10/311,639.70 = 81,332.44/x - Step 3: Cross multiply
207,843.10x = 311,639.70 × 81,332.44 - Step 4: Simplify right side
207,843.10x = 25,346,417,201.87 - Step 5: Solve for x
x = 25,346,417,201.87/207,843.10 - Step 6: Final answer
x = 121,949.76
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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.