Finding the Fourth Proportional to 311,906.49, 430,431.26 and 168,666.49
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Solution
The fourth proportional to 311,906.49, 430,431.26 and 168,666.49 is: 232,759.92
Step by Step Solution
- Step 1: Write the proportion equation
311,906.49 : 430,431.26 = 168,666.49 : x - Step 2: Convert to fraction form
311,906.49/430,431.26 = 168,666.49/x - Step 3: Cross multiply
311,906.49x = 430,431.26 × 168,666.49 - Step 4: Simplify right side
311,906.49x = 72,599,329,810.48 - Step 5: Solve for x
x = 72,599,329,810.48/311,906.49 - Step 6: Final answer
x = 232,759.92
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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.