Finding the Fourth Proportional to 361,811.20, 542,716.80 and 221,843.20
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Solution
The fourth proportional to 361,811.20, 542,716.80 and 221,843.20 is: 332,764.80
Step by Step Solution
- Step 1: Write the proportion equation
361,811.20 : 542,716.80 = 221,843.20 : x - Step 2: Convert to fraction form
361,811.20/542,716.80 = 221,843.20/x - Step 3: Cross multiply
361,811.20x = 542,716.80 × 221,843.20 - Step 4: Simplify right side
361,811.20x = 120,398,031,605.76 - Step 5: Solve for x
x = 120,398,031,605.76/361,811.20 - Step 6: Final answer
x = 332,764.80
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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.