Finding the Fourth Proportional to 285,636.26, 394,178.36 and 158,311.96
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Solution
The fourth proportional to 285,636.26, 394,178.36 and 158,311.96 is: 218,470.68
Step by Step Solution
- Step 1: Write the proportion equation
285,636.26 : 394,178.36 = 158,311.96 : x - Step 2: Convert to fraction form
285,636.26/394,178.36 = 158,311.96/x - Step 3: Cross multiply
285,636.26x = 394,178.36 × 158,311.96 - Step 4: Simplify right side
285,636.26x = 62,403,148,761.19 - Step 5: Solve for x
x = 62,403,148,761.19/285,636.26 - Step 6: Final answer
x = 218,470.68
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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.