Finding the Fourth Proportional to 394,138.86, 543,911.58 and 212,850.81
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Solution
The fourth proportional to 394,138.86, 543,911.58 and 212,850.81 is: 293,734.09
Step by Step Solution
- Step 1: Write the proportion equation
394,138.86 : 543,911.58 = 212,850.81 : x - Step 2: Convert to fraction form
394,138.86/543,911.58 = 212,850.81/x - Step 3: Cross multiply
394,138.86x = 543,911.58 × 212,850.81 - Step 4: Simplify right side
394,138.86x = 115,772,020,371.38 - Step 5: Solve for x
x = 115,772,020,371.38/394,138.86 - Step 6: Final answer
x = 293,734.09
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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.