Finding the Fourth Proportional to 236,871.21, 326,868.39 and 129,442.08
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Solution
The fourth proportional to 236,871.21, 326,868.39 and 129,442.08 is: 178,622.49
Step by Step Solution
- Step 1: Write the proportion equation
236,871.21 : 326,868.39 = 129,442.08 : x - Step 2: Convert to fraction form
236,871.21/326,868.39 = 129,442.08/x - Step 3: Cross multiply
236,871.21x = 326,868.39 × 129,442.08 - Step 4: Simplify right side
236,871.21x = 42,310,524,287.85 - Step 5: Solve for x
x = 42,310,524,287.85/236,871.21 - Step 6: Final answer
x = 178,622.49
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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.