Finding the Fourth Proportional to 263,286.76, 394,963.16 and 85,746.08
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Solution
The fourth proportional to 263,286.76, 394,963.16 and 85,746.08 is: 128,629.87
Step by Step Solution
- Step 1: Write the proportion equation
263,286.76 : 394,963.16 = 85,746.08 : x - Step 2: Convert to fraction form
263,286.76/394,963.16 = 85,746.08/x - Step 3: Cross multiply
263,286.76x = 394,963.16 × 85,746.08 - Step 4: Simplify right side
263,286.76x = 33,866,542,714.41 - Step 5: Solve for x
x = 33,866,542,714.41/263,286.76 - Step 6: Final answer
x = 128,629.87
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.