Finding the Fourth Proportional to 311,438.79, 429,785.37 and 168,198.84
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Solution
The fourth proportional to 311,438.79, 429,785.37 and 168,198.84 is: 232,114.31
Step by Step Solution
- Step 1: Write the proportion equation
311,438.79 : 429,785.37 = 168,198.84 : x - Step 2: Convert to fraction form
311,438.79/429,785.37 = 168,198.84/x - Step 3: Cross multiply
311,438.79x = 429,785.37 × 168,198.84 - Step 4: Simplify right side
311,438.79x = 72,289,400,682.97 - Step 5: Solve for x
x = 72,289,400,682.97/311,438.79 - Step 6: Final answer
x = 232,114.31
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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.