Finding the Fourth Proportional to 211,879.38, 292,321.11 and 121,202.31
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Solution
The fourth proportional to 211,879.38, 292,321.11 and 121,202.31 is: 167,217.75
Step by Step Solution
- Step 1: Write the proportion equation
211,879.38 : 292,321.11 = 121,202.31 : x - Step 2: Convert to fraction form
211,879.38/292,321.11 = 121,202.31/x - Step 3: Cross multiply
211,879.38x = 292,321.11 × 121,202.31 - Step 4: Simplify right side
211,879.38x = 35,429,993,793.76 - Step 5: Solve for x
x = 35,429,993,793.76/211,879.38 - Step 6: Final answer
x = 167,217.75
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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.