Finding the Fourth Proportional to 394,135.23, 543,906.62 and 212,847.15
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Solution
The fourth proportional to 394,135.23, 543,906.62 and 212,847.15 is: 293,729.06
Step by Step Solution
- Step 1: Write the proportion equation
394,135.23 : 543,906.62 = 212,847.15 : x - Step 2: Convert to fraction form
394,135.23/543,906.62 = 212,847.15/x - Step 3: Cross multiply
394,135.23x = 543,906.62 × 212,847.15 - Step 4: Simplify right side
394,135.23x = 115,768,970,829.25 - Step 5: Solve for x
x = 115,768,970,829.25/394,135.23 - Step 6: Final answer
x = 293,729.06
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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.