Finding the Fourth Proportional to 263,631.18, 395,514.21 and 76,642.68
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Solution
The fourth proportional to 263,631.18, 395,514.21 and 76,642.68 is: 114,983.63
Step by Step Solution
- Step 1: Write the proportion equation
263,631.18 : 395,514.21 = 76,642.68 : x - Step 2: Convert to fraction form
263,631.18/395,514.21 = 76,642.68/x - Step 3: Cross multiply
263,631.18x = 395,514.21 × 76,642.68 - Step 4: Simplify right side
263,631.18x = 30,313,269,032.48 - Step 5: Solve for x
x = 30,313,269,032.48/263,631.18 - Step 6: Final answer
x = 114,983.63
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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.