Finding the Fourth Proportional to 311,861.33, 430,270.39 and 190,876.49
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Solution
The fourth proportional to 311,861.33, 430,270.39 and 190,876.49 is: 263,349.42
Step by Step Solution
- Step 1: Write the proportion equation
311,861.33 : 430,270.39 = 190,876.49 : x - Step 2: Convert to fraction form
311,861.33/430,270.39 = 190,876.49/x - Step 3: Cross multiply
311,861.33x = 430,270.39 × 190,876.49 - Step 4: Simplify right side
311,861.33x = 82,128,501,794.13 - Step 5: Solve for x
x = 82,128,501,794.13/311,861.33 - Step 6: Final answer
x = 263,349.42
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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.