Finding the Fourth Proportional to 251,680.84, 347,311.02 and 138,503.32
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Solution
The fourth proportional to 251,680.84, 347,311.02 and 138,503.32 is: 191,129.88
Step by Step Solution
- Step 1: Write the proportion equation
251,680.84 : 347,311.02 = 138,503.32 : x - Step 2: Convert to fraction form
251,680.84/347,311.02 = 138,503.32/x - Step 3: Cross multiply
251,680.84x = 347,311.02 × 138,503.32 - Step 4: Simplify right side
251,680.84x = 48,103,729,342.59 - Step 5: Solve for x
x = 48,103,729,342.59/251,680.84 - Step 6: Final answer
x = 191,129.88
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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.