Finding the Fourth Proportional to 281,468.36, 422,139.21 and 129,519.68
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Solution
The fourth proportional to 281,468.36, 422,139.21 and 129,519.68 is: 194,250.37
Step by Step Solution
- Step 1: Write the proportion equation
281,468.36 : 422,139.21 = 129,519.68 : x - Step 2: Convert to fraction form
281,468.36/422,139.21 = 129,519.68/x - Step 3: Cross multiply
281,468.36x = 422,139.21 × 129,519.68 - Step 4: Simplify right side
281,468.36x = 54,675,333,283.96 - Step 5: Solve for x
x = 54,675,333,283.96/281,468.36 - Step 6: Final answer
x = 194,250.37
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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.