Finding the Fourth Proportional to 287,321.88, 430,687.10 and 127,473.09
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Solution
The fourth proportional to 287,321.88, 430,687.10 and 127,473.09 is: 191,078.44
Step by Step Solution
- Step 1: Write the proportion equation
287,321.88 : 430,687.10 = 127,473.09 : x - Step 2: Convert to fraction form
287,321.88/430,687.10 = 127,473.09/x - Step 3: Cross multiply
287,321.88x = 430,687.10 × 127,473.09 - Step 4: Simplify right side
287,321.88x = 54,901,015,460.14 - Step 5: Solve for x
x = 54,901,015,460.14/287,321.88 - Step 6: Final answer
x = 191,078.44
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.