Finding the Fourth Proportional to 396,919.20, 547,735.86 and 227,149.68
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Solution
The fourth proportional to 396,919.20, 547,735.86 and 227,149.68 is: 313,459.33
Step by Step Solution
- Step 1: Write the proportion equation
396,919.20 : 547,735.86 = 227,149.68 : x - Step 2: Convert to fraction form
396,919.20/547,735.86 = 227,149.68/x - Step 3: Cross multiply
396,919.20x = 547,735.86 × 227,149.68 - Step 4: Simplify right side
396,919.20x = 124,418,025,323.53 - Step 5: Solve for x
x = 124,418,025,323.53/396,919.20 - Step 6: Final answer
x = 313,459.33
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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.