Finding the Fourth Proportional to 226,232.12, 339,391.94 and 85,979.81
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Solution
The fourth proportional to 226,232.12, 339,391.94 and 85,979.81 is: 128,986.35
Step by Step Solution
- Step 1: Write the proportion equation
226,232.12 : 339,391.94 = 85,979.81 : x - Step 2: Convert to fraction form
226,232.12/339,391.94 = 85,979.81/x - Step 3: Cross multiply
226,232.12x = 339,391.94 × 85,979.81 - Step 4: Simplify right side
226,232.12x = 29,180,854,935.31 - Step 5: Solve for x
x = 29,180,854,935.31/226,232.12 - Step 6: Final answer
x = 128,986.35
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1.5x scale
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.