Finding the Fourth Proportional to 278,797.66, 418,406.80 and 129,142.95
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Solution
The fourth proportional to 278,797.66, 418,406.80 and 129,142.95 is: 193,811.84
Step by Step Solution
- Step 1: Write the proportion equation
278,797.66 : 418,406.80 = 129,142.95 : x - Step 2: Convert to fraction form
278,797.66/418,406.80 = 129,142.95/x - Step 3: Cross multiply
278,797.66x = 418,406.80 × 129,142.95 - Step 4: Simplify right side
278,797.66x = 54,034,288,452.06 - Step 5: Solve for x
x = 54,034,288,452.06/278,797.66 - Step 6: Final answer
x = 193,811.84
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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.