Finding the Fourth Proportional to 209,921.10, 289,688.76 and 114,425.70
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Solution
The fourth proportional to 209,921.10, 289,688.76 and 114,425.70 is: 157,906.18
Step by Step Solution
- Step 1: Write the proportion equation
209,921.10 : 289,688.76 = 114,425.70 : x - Step 2: Convert to fraction form
209,921.10/289,688.76 = 114,425.70/x - Step 3: Cross multiply
209,921.10x = 289,688.76 × 114,425.70 - Step 4: Simplify right side
209,921.10x = 33,147,839,145.13 - Step 5: Solve for x
x = 33,147,839,145.13/209,921.10 - Step 6: Final answer
x = 157,906.18
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.