Finding the Fourth Proportional to 280,378.44, 386,917.24 and 159,517.12
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Solution
The fourth proportional to 280,378.44, 386,917.24 and 159,517.12 is: 220,130.78
Step by Step Solution
- Step 1: Write the proportion equation
280,378.44 : 386,917.24 = 159,517.12 : x - Step 2: Convert to fraction form
280,378.44/386,917.24 = 159,517.12/x - Step 3: Cross multiply
280,378.44x = 386,917.24 × 159,517.12 - Step 4: Simplify right side
280,378.44x = 61,719,923,803.15 - Step 5: Solve for x
x = 61,719,923,803.15/280,378.44 - Step 6: Final answer
x = 220,130.78
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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.