Finding the Fourth Proportional to 209,309.20, 313,963.80 and 76,193.80
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Solution
The fourth proportional to 209,309.20, 313,963.80 and 76,193.80 is: 114,290.70
Step by Step Solution
- Step 1: Write the proportion equation
209,309.20 : 313,963.80 = 76,193.80 : x - Step 2: Convert to fraction form
209,309.20/313,963.80 = 76,193.80/x - Step 3: Cross multiply
209,309.20x = 313,963.80 × 76,193.80 - Step 4: Simplify right side
209,309.20x = 23,922,094,984.44 - Step 5: Solve for x
x = 23,922,094,984.44/209,309.20 - Step 6: Final answer
x = 114,290.70
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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.