Finding the Fourth Proportional to 281,378.13, 388,338.87 and 160,491.70
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Solution
The fourth proportional to 281,378.13, 388,338.87 and 160,491.70 is: 221,499.68
Step by Step Solution
- Step 1: Write the proportion equation
281,378.13 : 388,338.87 = 160,491.70 : x - Step 2: Convert to fraction form
281,378.13/388,338.87 = 160,491.70/x - Step 3: Cross multiply
281,378.13x = 388,338.87 × 160,491.70 - Step 4: Simplify right side
281,378.13x = 62,325,165,422.38 - Step 5: Solve for x
x = 62,325,165,422.38/281,378.13 - Step 6: Final answer
x = 221,499.68
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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.