Finding the Fourth Proportional to 378,956.44, 522,960.58 and 209,190.68
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Solution
The fourth proportional to 378,956.44, 522,960.58 and 209,190.68 is: 288,683.52
Step by Step Solution
- Step 1: Write the proportion equation
378,956.44 : 522,960.58 = 209,190.68 : x - Step 2: Convert to fraction form
378,956.44/522,960.58 = 209,190.68/x - Step 3: Cross multiply
378,956.44x = 522,960.58 × 209,190.68 - Step 4: Simplify right side
378,956.44x = 109,398,479,343.39 - Step 5: Solve for x
x = 109,398,479,343.39/378,956.44 - Step 6: Final answer
x = 288,683.52
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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.