Finding the Fourth Proportional to 207,286.38, 310,732.74 and 81,007.63
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Solution
The fourth proportional to 207,286.38, 310,732.74 and 81,007.63 is: 121,434.52
Step by Step Solution
- Step 1: Write the proportion equation
207,286.38 : 310,732.74 = 81,007.63 : x - Step 2: Convert to fraction form
207,286.38/310,732.74 = 81,007.63/x - Step 3: Cross multiply
207,286.38x = 310,732.74 × 81,007.63 - Step 4: Simplify right side
207,286.38x = 25,171,722,830.81 - Step 5: Solve for x
x = 25,171,722,830.81/207,286.38 - Step 6: Final answer
x = 121,434.52
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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.