Finding the Fourth Proportional to 281,451.12, 388,906.20 and 225,325.68
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Solution
The fourth proportional to 281,451.12, 388,906.20 and 225,325.68 is: 311,352.66
Step by Step Solution
- Step 1: Write the proportion equation
281,451.12 : 388,906.20 = 225,325.68 : x - Step 2: Convert to fraction form
281,451.12/388,906.20 = 225,325.68/x - Step 3: Cross multiply
281,451.12x = 388,906.20 × 225,325.68 - Step 4: Simplify right side
281,451.12x = 87,630,553,971.22 - Step 5: Solve for x
x = 87,630,553,971.22/281,451.12 - Step 6: Final answer
x = 311,352.66
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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.