Finding the Fourth Proportional to 218,749.14, 327,905.69 and 92,421.20
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Solution
The fourth proportional to 218,749.14, 327,905.69 and 92,421.20 is: 138,539.69
Step by Step Solution
- Step 1: Write the proportion equation
218,749.14 : 327,905.69 = 92,421.20 : x - Step 2: Convert to fraction form
218,749.14/327,905.69 = 92,421.20/x - Step 3: Cross multiply
218,749.14x = 327,905.69 × 92,421.20 - Step 4: Simplify right side
218,749.14x = 30,305,437,714.29 - Step 5: Solve for x
x = 30,305,437,714.29/218,749.14 - Step 6: Final answer
x = 138,539.69
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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.