Finding the Fourth Proportional to 311,987,675.30, 467,981,512.95 and 221,288,411.30
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Solution
The fourth proportional to 311,987,675.30, 467,981,512.95 and 221,288,411.30 is: 331,932,616.95
Step by Step Solution
- Step 1: Write the proportion equation
311,987,675.30 : 467,981,512.95 = 221,288,411.30 : x - Step 2: Convert to fraction form
311,987,675.30/467,981,512.95 = 221,288,411.30/x - Step 3: Cross multiply
311,987,675.30x = 467,981,512.95 × 221,288,411.30 - Step 4: Simplify right side
311,987,675.30x = 103,558,885,518,475,872 - Step 5: Solve for x
x = 103,558,885,518,475,872/311,987,675.30 - Step 6: Final answer
x = 331,932,616.95
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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.