Finding the Fourth Proportional to 312,787.12, 431,634.66 and 169,544.09
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Solution
The fourth proportional to 312,787.12, 431,634.66 and 169,544.09 is: 233,964.58
Step by Step Solution
- Step 1: Write the proportion equation
312,787.12 : 431,634.66 = 169,544.09 : x - Step 2: Convert to fraction form
312,787.12/431,634.66 = 169,544.09/x - Step 3: Cross multiply
312,787.12x = 431,634.66 × 169,544.09 - Step 4: Simplify right side
312,787.12x = 73,181,105,642.16 - Step 5: Solve for x
x = 73,181,105,642.16/312,787.12 - Step 6: Final answer
x = 233,964.58
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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.