Finding the Fourth Proportional to 248,078.20, 372,117.30 and 129,785.80
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Solution
The fourth proportional to 248,078.20, 372,117.30 and 129,785.80 is: 194,678.70
Step by Step Solution
- Step 1: Write the proportion equation
248,078.20 : 372,117.30 = 129,785.80 : x - Step 2: Convert to fraction form
248,078.20/372,117.30 = 129,785.80/x - Step 3: Cross multiply
248,078.20x = 372,117.30 × 129,785.80 - Step 4: Simplify right side
248,078.20x = 48,295,541,474.34 - Step 5: Solve for x
x = 48,295,541,474.34/248,078.20 - Step 6: Final answer
x = 194,678.70
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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.