Finding the Fourth Proportional to 289,067.94, 398,902.50 and 161,743.68
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Solution
The fourth proportional to 289,067.94, 398,902.50 and 161,743.68 is: 223,199.98
Step by Step Solution
- Step 1: Write the proportion equation
289,067.94 : 398,902.50 = 161,743.68 : x - Step 2: Convert to fraction form
289,067.94/398,902.50 = 161,743.68/x - Step 3: Cross multiply
289,067.94x = 398,902.50 × 161,743.68 - Step 4: Simplify right side
289,067.94x = 64,519,958,311.20 - Step 5: Solve for x
x = 64,519,958,311.20/289,067.94 - Step 6: Final answer
x = 223,199.98
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.