Finding the Fourth Proportional to 256,917.21, 354,546.05 and 143,740.05
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Solution
The fourth proportional to 256,917.21, 354,546.05 and 143,740.05 is: 198,361.44
Step by Step Solution
- Step 1: Write the proportion equation
256,917.21 : 354,546.05 = 143,740.05 : x - Step 2: Convert to fraction form
256,917.21/354,546.05 = 143,740.05/x - Step 3: Cross multiply
256,917.21x = 354,546.05 × 143,740.05 - Step 4: Simplify right side
256,917.21x = 50,962,466,954.30 - Step 5: Solve for x
x = 50,962,466,954.30/256,917.21 - Step 6: Final answer
x = 198,361.44
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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.