Finding the Fourth Proportional to 263,243.81, 394,865.40 and 85,750.53
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Solution
The fourth proportional to 263,243.81, 394,865.40 and 85,750.53 is: 128,625.70
Step by Step Solution
- Step 1: Write the proportion equation
263,243.81 : 394,865.40 = 85,750.53 : x - Step 2: Convert to fraction form
263,243.81/394,865.40 = 85,750.53/x - Step 3: Cross multiply
263,243.81x = 394,865.40 × 85,750.53 - Step 4: Simplify right side
263,243.81x = 33,859,917,650.23 - Step 5: Solve for x
x = 33,859,917,650.23/263,243.81 - Step 6: Final answer
x = 128,625.70
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1.5x scale
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.