Finding the Fourth Proportional to 226,759.30, 312,940.76 and 129,979.26
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Solution
The fourth proportional to 226,759.30, 312,940.76 and 129,979.26 is: 179,378.79
Step by Step Solution
- Step 1: Write the proportion equation
226,759.30 : 312,940.76 = 129,979.26 : x - Step 2: Convert to fraction form
226,759.30/312,940.76 = 129,979.26/x - Step 3: Cross multiply
226,759.30x = 312,940.76 × 129,979.26 - Step 4: Simplify right side
226,759.30x = 40,675,807,758.74 - Step 5: Solve for x
x = 40,675,807,758.74/226,759.30 - Step 6: Final answer
x = 179,378.79
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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.