Finding the Fourth Proportional to 198,669.09, 298,003.28 and 139,768.05
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Solution
The fourth proportional to 198,669.09, 298,003.28 and 139,768.05 is: 209,651.82
Step by Step Solution
- Step 1: Write the proportion equation
198,669.09 : 298,003.28 = 139,768.05 : x - Step 2: Convert to fraction form
198,669.09/298,003.28 = 139,768.05/x - Step 3: Cross multiply
198,669.09x = 298,003.28 × 139,768.05 - Step 4: Simplify right side
198,669.09x = 41,651,336,640.36 - Step 5: Solve for x
x = 41,651,336,640.36/198,669.09 - Step 6: Final answer
x = 209,651.82
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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.