Finding the Fourth Proportional to 281,245.05, 388,115.01 and 153,919.13
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Solution
The fourth proportional to 281,245.05, 388,115.01 and 153,919.13 is: 212,406.66
Step by Step Solution
- Step 1: Write the proportion equation
281,245.05 : 388,115.01 = 153,919.13 : x - Step 2: Convert to fraction form
281,245.05/388,115.01 = 153,919.13/x - Step 3: Cross multiply
281,245.05x = 388,115.01 × 153,919.13 - Step 4: Simplify right side
281,245.05x = 59,738,322,738.57 - Step 5: Solve for x
x = 59,738,322,738.57/281,245.05 - Step 6: Final answer
x = 212,406.66
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1.5x scale
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.