Finding the Fourth Proportional to 251,687.44, 347,331.12 and 138,512.80
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Solution
The fourth proportional to 251,687.44, 347,331.12 and 138,512.80 is: 191,149.01
Step by Step Solution
- Step 1: Write the proportion equation
251,687.44 : 347,331.12 = 138,512.80 : x - Step 2: Convert to fraction form
251,687.44/347,331.12 = 138,512.80/x - Step 3: Cross multiply
251,687.44x = 347,331.12 × 138,512.80 - Step 4: Simplify right side
251,687.44x = 48,109,805,958.34 - Step 5: Solve for x
x = 48,109,805,958.34/251,687.44 - Step 6: Final answer
x = 191,149.01
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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.