Finding the Fourth Proportional to 209,287.20, 313,930.80 and 201,122.40
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Solution
The fourth proportional to 209,287.20, 313,930.80 and 201,122.40 is: 301,683.60
Step by Step Solution
- Step 1: Write the proportion equation
209,287.20 : 313,930.80 = 201,122.40 : x - Step 2: Convert to fraction form
209,287.20/313,930.80 = 201,122.40/x - Step 3: Cross multiply
209,287.20x = 313,930.80 × 201,122.40 - Step 4: Simplify right side
209,287.20x = 63,138,515,929.92 - Step 5: Solve for x
x = 63,138,515,929.92/209,287.20 - Step 6: Final answer
x = 301,683.60
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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.