Finding the Fourth Proportional to 251,608.12, 347,224.50 and 138,431.08
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Solution
The fourth proportional to 251,608.12, 347,224.50 and 138,431.08 is: 191,037.80
Step by Step Solution
- Step 1: Write the proportion equation
251,608.12 : 347,224.50 = 138,431.08 : x - Step 2: Convert to fraction form
251,608.12/347,224.50 = 138,431.08/x - Step 3: Cross multiply
251,608.12x = 347,224.50 × 138,431.08 - Step 4: Simplify right side
251,608.12x = 48,066,662,537.46 - Step 5: Solve for x
x = 48,066,662,537.46/251,608.12 - Step 6: Final answer
x = 191,037.80
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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.