Finding the Fourth Proportional to 261,970.75, 361,519.64 and 142,738.75
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Solution
The fourth proportional to 261,970.75, 361,519.64 and 142,738.75 is: 196,979.48
Step by Step Solution
- Step 1: Write the proportion equation
261,970.75 : 361,519.64 = 142,738.75 : x - Step 2: Convert to fraction form
261,970.75/361,519.64 = 142,738.75/x - Step 3: Cross multiply
261,970.75x = 361,519.64 × 142,738.75 - Step 4: Simplify right side
261,970.75x = 51,602,861,514.05 - Step 5: Solve for x
x = 51,602,861,514.05/261,970.75 - Step 6: Final answer
x = 196,979.48
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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.