Finding the Fourth Proportional to 311,694.22, 430,139.99 and 168,453.92
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Solution
The fourth proportional to 311,694.22, 430,139.99 and 168,453.92 is: 232,467.47
Step by Step Solution
- Step 1: Write the proportion equation
311,694.22 : 430,139.99 = 168,453.92 : x - Step 2: Convert to fraction form
311,694.22/430,139.99 = 168,453.92/x - Step 3: Cross multiply
311,694.22x = 430,139.99 × 168,453.92 - Step 4: Simplify right side
311,694.22x = 72,458,767,464.26 - Step 5: Solve for x
x = 72,458,767,464.26/311,694.22 - Step 6: Final answer
x = 232,467.47
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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.