Finding the Fourth Proportional to 209,252.20, 313,878.30 and 76,136.80
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Solution
The fourth proportional to 209,252.20, 313,878.30 and 76,136.80 is: 114,205.20
Step by Step Solution
- Step 1: Write the proportion equation
209,252.20 : 313,878.30 = 76,136.80 : x - Step 2: Convert to fraction form
209,252.20/313,878.30 = 76,136.80/x - Step 3: Cross multiply
209,252.20x = 313,878.30 × 76,136.80 - Step 4: Simplify right side
209,252.20x = 23,897,689,351.44 - Step 5: Solve for x
x = 23,897,689,351.44/209,252.20 - Step 6: Final answer
x = 114,205.20
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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.