Finding the Fourth Proportional to 399,489.64, 599,236.71 and 133,249.42
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Solution
The fourth proportional to 399,489.64, 599,236.71 and 133,249.42 is: 199,874.88
Step by Step Solution
- Step 1: Write the proportion equation
399,489.64 : 599,236.71 = 133,249.42 : x - Step 2: Convert to fraction form
399,489.64/599,236.71 = 133,249.42/x - Step 3: Cross multiply
399,489.64x = 599,236.71 × 133,249.42 - Step 4: Simplify right side
399,489.64x = 79,847,944,050.21 - Step 5: Solve for x
x = 79,847,944,050.21/399,489.64 - Step 6: Final answer
x = 199,874.88
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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.