Finding the Fourth Proportional to 394,169.96, 543,953.70 and 215,321.96
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Solution
The fourth proportional to 394,169.96, 543,953.70 and 215,321.96 is: 297,143.84
Step by Step Solution
- Step 1: Write the proportion equation
394,169.96 : 543,953.70 = 215,321.96 : x - Step 2: Convert to fraction form
394,169.96/543,953.70 = 215,321.96/x - Step 3: Cross multiply
394,169.96x = 543,953.70 × 215,321.96 - Step 4: Simplify right side
394,169.96x = 117,125,176,833.25 - Step 5: Solve for x
x = 117,125,176,833.25/394,169.96 - Step 6: Final answer
x = 297,143.84
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.