Finding the Fourth Proportional to 194,639.20, 292,035.60 and 76,290.40
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Solution
The fourth proportional to 194,639.20, 292,035.60 and 76,290.40 is: 114,465.70
Step by Step Solution
- Step 1: Write the proportion equation
194,639.20 : 292,035.60 = 76,290.40 : x - Step 2: Convert to fraction form
194,639.20/292,035.60 = 76,290.40/x - Step 3: Cross multiply
194,639.20x = 292,035.60 × 76,290.40 - Step 4: Simplify right side
194,639.20x = 22,279,512,738.24 - Step 5: Solve for x
x = 22,279,512,738.24/194,639.20 - Step 6: Final answer
x = 114,465.70
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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.