Finding the Fourth Proportional to 285,687.20, 394,221.84 and 158,351.96
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Solution
The fourth proportional to 285,687.20, 394,221.84 and 158,351.96 is: 218,511.02
Step by Step Solution
- Step 1: Write the proportion equation
285,687.20 : 394,221.84 = 158,351.96 : x - Step 2: Convert to fraction form
285,687.20/394,221.84 = 158,351.96/x - Step 3: Cross multiply
285,687.20x = 394,221.84 × 158,351.96 - Step 4: Simplify right side
285,687.20x = 62,425,801,430.54 - Step 5: Solve for x
x = 62,425,801,430.54/285,687.20 - Step 6: Final answer
x = 218,511.02
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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.