Finding the Fourth Proportional to 257,160.72, 354,912.12 and 143,961.60
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Solution
The fourth proportional to 257,160.72, 354,912.12 and 143,961.60 is: 198,683.99
Step by Step Solution
- Step 1: Write the proportion equation
257,160.72 : 354,912.12 = 143,961.60 : x - Step 2: Convert to fraction form
257,160.72/354,912.12 = 143,961.60/x - Step 3: Cross multiply
257,160.72x = 354,912.12 × 143,961.60 - Step 4: Simplify right side
257,160.72x = 51,093,716,654.59 - Step 5: Solve for x
x = 51,093,716,654.59/257,160.72 - Step 6: Final answer
x = 198,683.99
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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.