Finding the Fourth Proportional to 281,405.26, 421,542.51 and 131,438.62
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Solution
The fourth proportional to 281,405.26, 421,542.51 and 131,438.62 is: 196,893.85
Step by Step Solution
- Step 1: Write the proportion equation
281,405.26 : 421,542.51 = 131,438.62 : x - Step 2: Convert to fraction form
281,405.26/421,542.51 = 131,438.62/x - Step 3: Cross multiply
281,405.26x = 421,542.51 × 131,438.62 - Step 4: Simplify right side
281,405.26x = 55,406,965,785.74 - Step 5: Solve for x
x = 55,406,965,785.74/281,405.26 - Step 6: Final answer
x = 196,893.85
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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.