Finding the Fourth Proportional to 354,904.20, 489,761.37 and 201,939.08
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Solution
The fourth proportional to 354,904.20, 489,761.37 and 201,939.08 is: 278,672.27
Step by Step Solution
- Step 1: Write the proportion equation
354,904.20 : 489,761.37 = 201,939.08 : x - Step 2: Convert to fraction form
354,904.20/489,761.37 = 201,939.08/x - Step 3: Cross multiply
354,904.20x = 489,761.37 × 201,939.08 - Step 4: Simplify right side
354,904.20x = 98,901,958,028.53 - Step 5: Solve for x
x = 98,901,958,028.53/354,904.20 - Step 6: Final answer
x = 278,672.27
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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.