Finding the Fourth Proportional to 217,286.31, 299,849.84 and 120,489.63
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Solution
The fourth proportional to 217,286.31, 299,849.84 and 120,489.63 is: 166,272.77
Step by Step Solution
- Step 1: Write the proportion equation
217,286.31 : 299,849.84 = 120,489.63 : x - Step 2: Convert to fraction form
217,286.31/299,849.84 = 120,489.63/x - Step 3: Cross multiply
217,286.31x = 299,849.84 × 120,489.63 - Step 4: Simplify right side
217,286.31x = 36,128,795,674.71 - Step 5: Solve for x
x = 36,128,795,674.71/217,286.31 - Step 6: Final answer
x = 166,272.77
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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.