Finding the Fourth Proportional to 213,863.20, 320,794.80 and 153,728.80
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Solution
The fourth proportional to 213,863.20, 320,794.80 and 153,728.80 is: 230,593.20
Step by Step Solution
- Step 1: Write the proportion equation
213,863.20 : 320,794.80 = 153,728.80 : x - Step 2: Convert to fraction form
213,863.20/320,794.80 = 153,728.80/x - Step 3: Cross multiply
213,863.20x = 320,794.80 × 153,728.80 - Step 4: Simplify right side
213,863.20x = 49,315,399,650.24 - Step 5: Solve for x
x = 49,315,399,650.24/213,863.20 - Step 6: Final answer
x = 230,593.20
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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.