Finding the Fourth Proportional to 642,336.80, 963,278.40 and 221,514.80
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Solution
The fourth proportional to 642,336.80, 963,278.40 and 221,514.80 is: 332,193.99
Step by Step Solution
- Step 1: Write the proportion equation
642,336.80 : 963,278.40 = 221,514.80 : x - Step 2: Convert to fraction form
642,336.80/963,278.40 = 221,514.80/x - Step 3: Cross multiply
642,336.80x = 963,278.40 × 221,514.80 - Step 4: Simplify right side
642,336.80x = 213,380,422,120.32 - Step 5: Solve for x
x = 213,380,422,120.32/642,336.80 - Step 6: Final answer
x = 332,193.99
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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.