Finding the Fourth Proportional to 216,427.20, 324,640.80 and 208,132.80
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Solution
The fourth proportional to 216,427.20, 324,640.80 and 208,132.80 is: 312,199.20
Step by Step Solution
- Step 1: Write the proportion equation
216,427.20 : 324,640.80 = 208,132.80 : x - Step 2: Convert to fraction form
216,427.20/324,640.80 = 208,132.80/x - Step 3: Cross multiply
216,427.20x = 324,640.80 × 208,132.80 - Step 4: Simplify right side
216,427.20x = 67,568,398,698.24 - Step 5: Solve for x
x = 67,568,398,698.24/216,427.20 - Step 6: Final answer
x = 312,199.20
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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.