Finding the Fourth Proportional to 312,544.05, 431,310.77 and 169,304.06
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Solution
The fourth proportional to 312,544.05, 431,310.77 and 169,304.06 is: 233,639.58
Step by Step Solution
- Step 1: Write the proportion equation
312,544.05 : 431,310.77 = 169,304.06 : x - Step 2: Convert to fraction form
312,544.05/431,310.77 = 169,304.06/x - Step 3: Cross multiply
312,544.05x = 431,310.77 × 169,304.06 - Step 4: Simplify right side
312,544.05x = 73,022,661,479.65 - Step 5: Solve for x
x = 73,022,661,479.65/312,544.05 - Step 6: Final answer
x = 233,639.58
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1.5x scale
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.