Finding the Fourth Proportional to 394,165.75, 543,948.74 and 215,317.75
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Solution
The fourth proportional to 394,165.75, 543,948.74 and 215,317.75 is: 297,138.50
Step by Step Solution
- Step 1: Write the proportion equation
394,165.75 : 543,948.74 = 215,317.75 : x - Step 2: Convert to fraction form
394,165.75/543,948.74 = 215,317.75/x - Step 3: Cross multiply
394,165.75x = 543,948.74 × 215,317.75 - Step 4: Simplify right side
394,165.75x = 117,121,817,735.55 - Step 5: Solve for x
x = 117,121,817,735.55/394,165.75 - Step 6: Final answer
x = 297,138.50
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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.