Finding the Fourth Proportional to 261,960.75, 361,505.84 and 142,728.75
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Solution
The fourth proportional to 261,960.75, 361,505.84 and 142,728.75 is: 196,965.68
Step by Step Solution
- Step 1: Write the proportion equation
261,960.75 : 361,505.84 = 142,728.75 : x - Step 2: Convert to fraction form
261,960.75/361,505.84 = 142,728.75/x - Step 3: Cross multiply
261,960.75x = 361,505.84 × 142,728.75 - Step 4: Simplify right side
261,960.75x = 51,597,275,947.26 - Step 5: Solve for x
x = 51,597,275,947.26/261,960.75 - Step 6: Final answer
x = 196,965.68
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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.