Finding the Fourth Proportional to 212,383.97, 318,565.55 and 79,253.84
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Solution
The fourth proportional to 212,383.97, 318,565.55 and 79,253.84 is: 118,876.88
Step by Step Solution
- Step 1: Write the proportion equation
212,383.97 : 318,565.55 = 79,253.84 : x - Step 2: Convert to fraction form
212,383.97/318,565.55 = 79,253.84/x - Step 3: Cross multiply
212,383.97x = 318,565.55 × 79,253.84 - Step 4: Simplify right side
212,383.97x = 25,247,544,123.76 - Step 5: Solve for x
x = 25,247,544,123.76/212,383.97 - Step 6: Final answer
x = 118,876.88
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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.