Finding the Fourth Proportional to 209,983.70, 289,778.87 and 114,491.99
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Solution
The fourth proportional to 209,983.70, 289,778.87 and 114,491.99 is: 157,999.69
Step by Step Solution
- Step 1: Write the proportion equation
209,983.70 : 289,778.87 = 114,491.99 : x - Step 2: Convert to fraction form
209,983.70/289,778.87 = 114,491.99/x - Step 3: Cross multiply
209,983.70x = 289,778.87 × 114,491.99 - Step 4: Simplify right side
209,983.70x = 33,177,358,913.79 - Step 5: Solve for x
x = 33,177,358,913.79/209,983.70 - Step 6: Final answer
x = 157,999.69
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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.