Finding the Fourth Proportional to 285,769.62, 394,361.97 and 154,947.38
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Solution
The fourth proportional to 285,769.62, 394,361.97 and 154,947.38 is: 213,827.33
Step by Step Solution
- Step 1: Write the proportion equation
285,769.62 : 394,361.97 = 154,947.38 : x - Step 2: Convert to fraction form
285,769.62/394,361.97 = 154,947.38/x - Step 3: Cross multiply
285,769.62x = 394,361.97 × 154,947.38 - Step 4: Simplify right side
285,769.62x = 61,105,353,688.56 - Step 5: Solve for x
x = 61,105,353,688.56/285,769.62 - Step 6: Final answer
x = 213,827.33
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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.