Finding the Fourth Proportional to 399,645.06, 599,453.70 and 100,128.18
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Solution
The fourth proportional to 399,645.06, 599,453.70 and 100,128.18 is: 150,188.79
Step by Step Solution
- Step 1: Write the proportion equation
399,645.06 : 599,453.70 = 100,128.18 : x - Step 2: Convert to fraction form
399,645.06/599,453.70 = 100,128.18/x - Step 3: Cross multiply
399,645.06x = 599,453.70 × 100,128.18 - Step 4: Simplify right side
399,645.06x = 60,022,207,975.27 - Step 5: Solve for x
x = 60,022,207,975.27/399,645.06 - Step 6: Final answer
x = 150,188.79
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.