Finding the Fourth Proportional to 265,694.89, 398,619.97 and 85,776.09
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Solution
The fourth proportional to 265,694.89, 398,619.97 and 85,776.09 is: 128,689.20
Step by Step Solution
- Step 1: Write the proportion equation
265,694.89 : 398,619.97 = 85,776.09 : x - Step 2: Convert to fraction form
265,694.89/398,619.97 = 85,776.09/x - Step 3: Cross multiply
265,694.89x = 398,619.97 × 85,776.09 - Step 4: Simplify right side
265,694.89x = 34,192,062,422.52 - Step 5: Solve for x
x = 34,192,062,422.52/265,694.89 - Step 6: Final answer
x = 128,689.20
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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.