Finding the Fourth Proportional to 311,987,728.80, 467,981,593.20 and 221,288,464.80
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Solution
The fourth proportional to 311,987,728.80, 467,981,593.20 and 221,288,464.80 is: 331,932,697.20
Step by Step Solution
- Step 1: Write the proportion equation
311,987,728.80 : 467,981,593.20 = 221,288,464.80 : x - Step 2: Convert to fraction form
311,987,728.80/467,981,593.20 = 221,288,464.80/x - Step 3: Cross multiply
311,987,728.80x = 467,981,593.20 × 221,288,464.80 - Step 4: Simplify right side
311,987,728.80x = 103,558,928,313,886,128 - Step 5: Solve for x
x = 103,558,928,313,886,128/311,987,728.80 - Step 6: Final answer
x = 331,932,697.20
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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.