Finding the Fourth Proportional to 261,786.40, 392,794.80 and 121,472.80
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Solution
The fourth proportional to 261,786.40, 392,794.80 and 121,472.80 is: 182,262.65
Step by Step Solution
- Step 1: Write the proportion equation
261,786.40 : 392,794.80 = 121,472.80 : x - Step 2: Convert to fraction form
261,786.40/392,794.80 = 121,472.80/x - Step 3: Cross multiply
261,786.40x = 392,794.80 × 121,472.80 - Step 4: Simplify right side
261,786.40x = 47,713,884,181.44 - Step 5: Solve for x
x = 47,713,884,181.44/261,786.40 - Step 6: Final answer
x = 182,262.65
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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.