Finding the Fourth Proportional to 212,708.16, 319,134.60 and 133,729.92
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Solution
The fourth proportional to 212,708.16, 319,134.60 and 133,729.92 is: 200,640.37
Step by Step Solution
- Step 1: Write the proportion equation
212,708.16 : 319,134.60 = 133,729.92 : x - Step 2: Convert to fraction form
212,708.16/319,134.60 = 133,729.92/x - Step 3: Cross multiply
212,708.16x = 319,134.60 × 133,729.92 - Step 4: Simplify right side
212,708.16x = 42,677,844,527.23 - Step 5: Solve for x
x = 42,677,844,527.23/212,708.16 - Step 6: Final answer
x = 200,640.37
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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.