Finding the Fourth Proportional to 251,921.75, 347,636.21 and 138,744.50
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Solution
The fourth proportional to 251,921.75, 347,636.21 and 138,744.50 is: 191,458.70
Step by Step Solution
- Step 1: Write the proportion equation
251,921.75 : 347,636.21 = 138,744.50 : x - Step 2: Convert to fraction form
251,921.75/347,636.21 = 138,744.50/x - Step 3: Cross multiply
251,921.75x = 347,636.21 × 138,744.50 - Step 4: Simplify right side
251,921.75x = 48,232,609,706.44 - Step 5: Solve for x
x = 48,232,609,706.44/251,921.75 - Step 6: Final answer
x = 191,458.70
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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.