Finding the Fourth Proportional to 280,863.80, 421,295.70 and 202,131.80
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Solution
The fourth proportional to 280,863.80, 421,295.70 and 202,131.80 is: 303,197.70
Step by Step Solution
- Step 1: Write the proportion equation
280,863.80 : 421,295.70 = 202,131.80 : x - Step 2: Convert to fraction form
280,863.80/421,295.70 = 202,131.80/x - Step 3: Cross multiply
280,863.80x = 421,295.70 × 202,131.80 - Step 4: Simplify right side
280,863.80x = 85,157,258,173.26 - Step 5: Solve for x
x = 85,157,258,173.26/280,863.80 - Step 6: Final answer
x = 303,197.70
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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.