Finding the Fourth Proportional to 251,942.13, 347,680.08 and 138,764.88
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Solution
The fourth proportional to 251,942.13, 347,680.08 and 138,764.88 is: 191,495.50
Step by Step Solution
- Step 1: Write the proportion equation
251,942.13 : 347,680.08 = 138,764.88 : x - Step 2: Convert to fraction form
251,942.13/347,680.08 = 138,764.88/x - Step 3: Cross multiply
251,942.13x = 347,680.08 × 138,764.88 - Step 4: Simplify right side
251,942.13x = 48,245,784,579.59 - Step 5: Solve for x
x = 48,245,784,579.59/251,942.13 - Step 6: Final answer
x = 191,495.50
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1.5x scale
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.