Finding the Fourth Proportional to 428,170.63, 591,147.74 and 267,262.11
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Solution
The fourth proportional to 428,170.63, 591,147.74 and 267,262.11 is: 368,991.66
Step by Step Solution
- Step 1: Write the proportion equation
428,170.63 : 591,147.74 = 267,262.11 : x - Step 2: Convert to fraction form
428,170.63/591,147.74 = 267,262.11/x - Step 3: Cross multiply
428,170.63x = 591,147.74 × 267,262.11 - Step 4: Simplify right side
428,170.63x = 157,991,392,314.13 - Step 5: Solve for x
x = 157,991,392,314.13/428,170.63 - Step 6: Final answer
x = 368,991.66
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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.