Finding the Fourth Proportional to 419,865.44, 629,798.16 and 139,382.68
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Solution
The fourth proportional to 419,865.44, 629,798.16 and 139,382.68 is: 209,074.02
Step by Step Solution
- Step 1: Write the proportion equation
419,865.44 : 629,798.16 = 139,382.68 : x - Step 2: Convert to fraction form
419,865.44/629,798.16 = 139,382.68/x - Step 3: Cross multiply
419,865.44x = 629,798.16 × 139,382.68 - Step 4: Simplify right side
419,865.44x = 87,782,955,399.87 - Step 5: Solve for x
x = 87,782,955,399.87/419,865.44 - Step 6: Final answer
x = 209,074.02
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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.