Finding the Fourth Proportional to 248,989.92, 343,634.88 and 138,619.68
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Solution
The fourth proportional to 248,989.92, 343,634.88 and 138,619.68 is: 191,311.19
Step by Step Solution
- Step 1: Write the proportion equation
248,989.92 : 343,634.88 = 138,619.68 : x - Step 2: Convert to fraction form
248,989.92/343,634.88 = 138,619.68/x - Step 3: Cross multiply
248,989.92x = 343,634.88 × 138,619.68 - Step 4: Simplify right side
248,989.92x = 47,634,557,102.44 - Step 5: Solve for x
x = 47,634,557,102.44/248,989.92 - Step 6: Final answer
x = 191,311.19
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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.