Finding the Fourth Proportional to 252,759.75, 379,431.24 and 128,363.19
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Solution
The fourth proportional to 252,759.75, 379,431.24 and 128,363.19 is: 192,692.88
Step by Step Solution
- Step 1: Write the proportion equation
252,759.75 : 379,431.24 = 128,363.19 : x - Step 2: Convert to fraction form
252,759.75/379,431.24 = 128,363.19/x - Step 3: Cross multiply
252,759.75x = 379,431.24 × 128,363.19 - Step 4: Simplify right side
252,759.75x = 48,705,004,352.06 - Step 5: Solve for x
x = 48,705,004,352.06/252,759.75 - Step 6: Final answer
x = 192,692.88
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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.