Finding the Fourth Proportional to 251,912.24, 347,639.32 and 138,735.28
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Solution
The fourth proportional to 251,912.24, 347,639.32 and 138,735.28 is: 191,454.92
Step by Step Solution
- Step 1: Write the proportion equation
251,912.24 : 347,639.32 = 138,735.28 : x - Step 2: Convert to fraction form
251,912.24/347,639.32 = 138,735.28/x - Step 3: Cross multiply
251,912.24x = 347,639.32 × 138,735.28 - Step 4: Simplify right side
251,912.24x = 48,229,838,399.21 - Step 5: Solve for x
x = 48,229,838,399.21/251,912.24 - Step 6: Final answer
x = 191,454.92
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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.