Finding the Fourth Proportional to 209,217.20, 313,824.36 and 68,987.12
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Solution
The fourth proportional to 209,217.20, 313,824.36 and 68,987.12 is: 103,480.21
Step by Step Solution
- Step 1: Write the proportion equation
209,217.20 : 313,824.36 = 68,987.12 : x - Step 2: Convert to fraction form
209,217.20/313,824.36 = 68,987.12/x - Step 3: Cross multiply
209,217.20x = 313,824.36 × 68,987.12 - Step 4: Simplify right side
209,217.20x = 21,649,838,782.24 - Step 5: Solve for x
x = 21,649,838,782.24/209,217.20 - Step 6: Final answer
x = 103,480.21
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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.