Finding the Fourth Proportional to 311,906.36, 430,430.79 and 168,666.41
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Solution
The fourth proportional to 311,906.36, 430,430.79 and 168,666.41 is: 232,759.65
Step by Step Solution
- Step 1: Write the proportion equation
311,906.36 : 430,430.79 = 168,666.41 : x - Step 2: Convert to fraction form
311,906.36/430,430.79 = 168,666.41/x - Step 3: Cross multiply
311,906.36x = 430,430.79 × 168,666.41 - Step 4: Simplify right side
311,906.36x = 72,599,216,102.76 - Step 5: Solve for x
x = 72,599,216,102.76/311,906.36 - Step 6: Final answer
x = 232,759.65
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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.