Finding the Fourth Proportional to 394,128.72, 543,866.67 and 222,039.09
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Solution
The fourth proportional to 394,128.72, 543,866.67 and 222,039.09 is: 306,396.50
Step by Step Solution
- Step 1: Write the proportion equation
394,128.72 : 543,866.67 = 222,039.09 : x - Step 2: Convert to fraction form
394,128.72/543,866.67 = 222,039.09/x - Step 3: Cross multiply
394,128.72x = 543,866.67 × 222,039.09 - Step 4: Simplify right side
394,128.72x = 120,759,660,488.13 - Step 5: Solve for x
x = 120,759,660,488.13/394,128.72 - Step 6: Final answer
x = 306,396.50
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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.