Finding the Fourth Proportional to 212,383.21, 318,564.43 and 79,253.09
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Solution
The fourth proportional to 212,383.21, 318,564.43 and 79,253.09 is: 118,875.76
Step by Step Solution
- Step 1: Write the proportion equation
212,383.21 : 318,564.43 = 79,253.09 : x - Step 2: Convert to fraction form
212,383.21/318,564.43 = 79,253.09/x - Step 3: Cross multiply
212,383.21x = 318,564.43 × 79,253.09 - Step 4: Simplify right side
212,383.21x = 25,247,215,291.05 - Step 5: Solve for x
x = 25,247,215,291.05/212,383.21 - Step 6: Final answer
x = 118,875.76
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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.