Finding the Fourth Proportional to 394,923.11, 592,446.12 and 128,621.66
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Solution
The fourth proportional to 394,923.11, 592,446.12 and 128,621.66 is: 192,952.50
Step by Step Solution
- Step 1: Write the proportion equation
394,923.11 : 592,446.12 = 128,621.66 : x - Step 2: Convert to fraction form
394,923.11/592,446.12 = 128,621.66/x - Step 3: Cross multiply
394,923.11x = 592,446.12 × 128,621.66 - Step 4: Simplify right side
394,923.11x = 76,201,400,452.73 - Step 5: Solve for x
x = 76,201,400,452.73/394,923.11 - Step 6: Final answer
x = 192,952.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.