Finding the Fourth Proportional to 396,509.36, 547,183.28 and 215,221.44
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Solution
The fourth proportional to 396,509.36, 547,183.28 and 215,221.44 is: 297,005.78
Step by Step Solution
- Step 1: Write the proportion equation
396,509.36 : 547,183.28 = 215,221.44 : x - Step 2: Convert to fraction form
396,509.36/547,183.28 = 215,221.44/x - Step 3: Cross multiply
396,509.36x = 547,183.28 × 215,221.44 - Step 4: Simplify right side
396,509.36x = 117,765,573,465.52 - Step 5: Solve for x
x = 117,765,573,465.52/396,509.36 - Step 6: Final answer
x = 297,005.78
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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.