Finding the Fourth Proportional to 394,198.08, 543,993.18 and 212,909.94
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Solution
The fourth proportional to 394,198.08, 543,993.18 and 212,909.94 is: 293,815.63
Step by Step Solution
- Step 1: Write the proportion equation
394,198.08 : 543,993.18 = 212,909.94 : x - Step 2: Convert to fraction form
394,198.08/543,993.18 = 212,909.94/x - Step 3: Cross multiply
394,198.08x = 543,993.18 × 212,909.94 - Step 4: Simplify right side
394,198.08x = 115,821,555,314.21 - Step 5: Solve for x
x = 115,821,555,314.21/394,198.08 - Step 6: Final answer
x = 293,815.63
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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.