Finding the Fourth Proportional to 259,912.42, 389,649.93 and 126,724.12
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Solution
The fourth proportional to 259,912.42, 389,649.93 and 126,724.12 is: 189,979.55
Step by Step Solution
- Step 1: Write the proportion equation
259,912.42 : 389,649.93 = 126,724.12 : x - Step 2: Convert to fraction form
259,912.42/389,649.93 = 126,724.12/x - Step 3: Cross multiply
259,912.42x = 389,649.93 × 126,724.12 - Step 4: Simplify right side
259,912.42x = 49,378,044,487.31 - Step 5: Solve for x
x = 49,378,044,487.31/259,912.42 - Step 6: Final answer
x = 189,979.55
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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.