Finding the Fourth Proportional to 329,748.75, 494,290.80 and 129,991.80
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Solution
The fourth proportional to 329,748.75, 494,290.80 and 129,991.80 is: 194,856.69
Step by Step Solution
- Step 1: Write the proportion equation
329,748.75 : 494,290.80 = 129,991.80 : x - Step 2: Convert to fraction form
329,748.75/494,290.80 = 129,991.80/x - Step 3: Cross multiply
329,748.75x = 494,290.80 × 129,991.80 - Step 4: Simplify right side
329,748.75x = 64,253,750,815.44 - Step 5: Solve for x
x = 64,253,750,815.44/329,748.75 - Step 6: Final answer
x = 194,856.69
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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.