Finding the Fourth Proportional to 209,219.76, 313,831.83 and 82,890.75
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Solution
The fourth proportional to 209,219.76, 313,831.83 and 82,890.75 is: 124,336.99
Step by Step Solution
- Step 1: Write the proportion equation
209,219.76 : 313,831.83 = 82,890.75 : x - Step 2: Convert to fraction form
209,219.76/313,831.83 = 82,890.75/x - Step 3: Cross multiply
209,219.76x = 313,831.83 × 82,890.75 - Step 4: Simplify right side
209,219.76x = 26,013,755,762.57 - Step 5: Solve for x
x = 26,013,755,762.57/209,219.76 - Step 6: Final answer
x = 124,336.99
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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.