Finding the Fourth Proportional to 329,609.70, 494,414.55 and 80,291.70
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Solution
The fourth proportional to 329,609.70, 494,414.55 and 80,291.70 is: 120,437.55
Step by Step Solution
- Step 1: Write the proportion equation
329,609.70 : 494,414.55 = 80,291.70 : x - Step 2: Convert to fraction form
329,609.70/494,414.55 = 80,291.70/x - Step 3: Cross multiply
329,609.70x = 494,414.55 × 80,291.70 - Step 4: Simplify right side
329,609.70x = 39,697,384,724.24 - Step 5: Solve for x
x = 39,697,384,724.24/329,609.70 - Step 6: Final answer
x = 120,437.55
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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.