Finding the Fourth Proportional to 278,799.12, 418,198.20 and 79,121.44
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Solution
The fourth proportional to 278,799.12, 418,198.20 and 79,121.44 is: 118,682.02
Step by Step Solution
- Step 1: Write the proportion equation
278,799.12 : 418,198.20 = 79,121.44 : x - Step 2: Convert to fraction form
278,799.12/418,198.20 = 79,121.44/x - Step 3: Cross multiply
278,799.12x = 418,198.20 × 79,121.44 - Step 4: Simplify right side
278,799.12x = 33,088,443,789.41 - Step 5: Solve for x
x = 33,088,443,789.41/278,799.12 - Step 6: Final answer
x = 118,682.02
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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.