Finding the Fourth Proportional to 279,753.80, 419,630.36 and 129,912.17
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Solution
The fourth proportional to 279,753.80, 419,630.36 and 129,912.17 is: 194,868.09
Step by Step Solution
- Step 1: Write the proportion equation
279,753.80 : 419,630.36 = 129,912.17 : x - Step 2: Convert to fraction form
279,753.80/419,630.36 = 129,912.17/x - Step 3: Cross multiply
279,753.80x = 419,630.36 × 129,912.17 - Step 4: Simplify right side
279,753.80x = 54,515,087,917.77 - Step 5: Solve for x
x = 54,515,087,917.77/279,753.80 - Step 6: Final answer
x = 194,868.09
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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.