Finding the Fourth Proportional to 428,891.96, 642,919.68 and 204,191.99
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Solution
The fourth proportional to 428,891.96, 642,919.68 and 204,191.99 is: 306,088.85
Step by Step Solution
- Step 1: Write the proportion equation
428,891.96 : 642,919.68 = 204,191.99 : x - Step 2: Convert to fraction form
428,891.96/642,919.68 = 204,191.99/x - Step 3: Cross multiply
428,891.96x = 642,919.68 × 204,191.99 - Step 4: Simplify right side
428,891.96x = 131,279,048,065.71 - Step 5: Solve for x
x = 131,279,048,065.71/428,891.96 - Step 6: Final answer
x = 306,088.85
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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.