Finding the Fourth Proportional to 256,916.21, 354,544.67 and 143,739.05
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Solution
The fourth proportional to 256,916.21, 354,544.67 and 143,739.05 is: 198,360.06
Step by Step Solution
- Step 1: Write the proportion equation
256,916.21 : 354,544.67 = 143,739.05 : x - Step 2: Convert to fraction form
256,916.21/354,544.67 = 143,739.05/x - Step 3: Cross multiply
256,916.21x = 354,544.67 × 143,739.05 - Step 4: Simplify right side
256,916.21x = 50,961,912,634.99 - Step 5: Solve for x
x = 50,961,912,634.99/256,916.21 - Step 6: Final answer
x = 198,360.06
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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.