Finding the Fourth Proportional to 285,393.53, 394,107.81 and 213,648.99
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Solution
The fourth proportional to 285,393.53, 394,107.81 and 213,648.99 is: 295,033.80
Step by Step Solution
- Step 1: Write the proportion equation
285,393.53 : 394,107.81 = 213,648.99 : x - Step 2: Convert to fraction form
285,393.53/394,107.81 = 213,648.99/x - Step 3: Cross multiply
285,393.53x = 394,107.81 × 213,648.99 - Step 4: Simplify right side
285,393.53x = 84,200,736,697.16 - Step 5: Solve for x
x = 84,200,736,697.16/285,393.53 - Step 6: Final answer
x = 295,033.80
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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.