Finding the Fourth Proportional to 311,287.08, 429,183.18 and 203,686.68
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Solution
The fourth proportional to 311,287.08, 429,183.18 and 203,686.68 is: 280,830.47
Step by Step Solution
- Step 1: Write the proportion equation
311,287.08 : 429,183.18 = 203,686.68 : x - Step 2: Convert to fraction form
311,287.08/429,183.18 = 203,686.68/x - Step 3: Cross multiply
311,287.08x = 429,183.18 × 203,686.68 - Step 4: Simplify right side
311,287.08x = 87,418,897,046.04 - Step 5: Solve for x
x = 87,418,897,046.04/311,287.08 - Step 6: Final answer
x = 280,830.47
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.