Finding the Fourth Proportional to 212,409.56, 318,615.24 and 86,052.26
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Solution
The fourth proportional to 212,409.56, 318,615.24 and 86,052.26 is: 129,078.75
Step by Step Solution
- Step 1: Write the proportion equation
212,409.56 : 318,615.24 = 86,052.26 : x - Step 2: Convert to fraction form
212,409.56/318,615.24 = 86,052.26/x - Step 3: Cross multiply
212,409.56x = 318,615.24 × 86,052.26 - Step 4: Simplify right side
212,409.56x = 27,417,561,472.44 - Step 5: Solve for x
x = 27,417,561,472.44/212,409.56 - Step 6: Final answer
x = 129,078.75
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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.