Finding the Fourth Proportional to 312,378.46, 430,760.07 and 267,205.99
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Solution
The fourth proportional to 312,378.46, 430,760.07 and 267,205.99 is: 368,468.65
Step by Step Solution
- Step 1: Write the proportion equation
312,378.46 : 430,760.07 = 267,205.99 : x - Step 2: Convert to fraction form
312,378.46/430,760.07 = 267,205.99/x - Step 3: Cross multiply
312,378.46x = 430,760.07 × 267,205.99 - Step 4: Simplify right side
312,378.46x = 115,101,670,956.82 - Step 5: Solve for x
x = 115,101,670,956.82/312,378.46 - Step 6: Final answer
x = 368,468.65
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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.