Finding the Fourth Proportional to 394,135.12, 543,906.46 and 212,847.06
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Solution
The fourth proportional to 394,135.12, 543,906.46 and 212,847.06 is: 293,728.94
Step by Step Solution
- Step 1: Write the proportion equation
394,135.12 : 543,906.46 = 212,847.06 : x - Step 2: Convert to fraction form
394,135.12/543,906.46 = 212,847.06/x - Step 3: Cross multiply
394,135.12x = 543,906.46 × 212,847.06 - Step 4: Simplify right side
394,135.12x = 115,768,890,926.01 - Step 5: Solve for x
x = 115,768,890,926.01/394,135.12 - Step 6: Final answer
x = 293,728.94
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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.