Finding the Fourth Proportional to 395,939.40, 593,909.10 and 115,465.80
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Solution
The fourth proportional to 395,939.40, 593,909.10 and 115,465.80 is: 173,198.70
Step by Step Solution
- Step 1: Write the proportion equation
395,939.40 : 593,909.10 = 115,465.80 : x - Step 2: Convert to fraction form
395,939.40/593,909.10 = 115,465.80/x - Step 3: Cross multiply
395,939.40x = 593,909.10 × 115,465.80 - Step 4: Simplify right side
395,939.40x = 68,576,189,358.78 - Step 5: Solve for x
x = 68,576,189,358.78/395,939.40 - Step 6: Final answer
x = 173,198.70
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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.