Finding the Fourth Proportional to 394,135.73, 543,907.31 and 212,847.65
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Solution
The fourth proportional to 394,135.73, 543,907.31 and 212,847.65 is: 293,729.75
Step by Step Solution
- Step 1: Write the proportion equation
394,135.73 : 543,907.31 = 212,847.65 : x - Step 2: Convert to fraction form
394,135.73/543,907.31 = 212,847.65/x - Step 3: Cross multiply
394,135.73x = 543,907.31 × 212,847.65 - Step 4: Simplify right side
394,135.73x = 115,769,390,327.32 - Step 5: Solve for x
x = 115,769,390,327.32/394,135.73 - Step 6: Final answer
x = 293,729.75
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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.