Finding the Fourth Proportional to 209,379.70, 314,029.49 and 81,295.99
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Solution
The fourth proportional to 209,379.70, 314,029.49 and 81,295.99 is: 121,928.43
Step by Step Solution
- Step 1: Write the proportion equation
209,379.70 : 314,029.49 = 81,295.99 : x - Step 2: Convert to fraction form
209,379.70/314,029.49 = 81,295.99/x - Step 3: Cross multiply
209,379.70x = 314,029.49 × 81,295.99 - Step 4: Simplify right side
209,379.70x = 25,529,337,544.48 - Step 5: Solve for x
x = 25,529,337,544.48/209,379.70 - Step 6: Final answer
x = 121,928.43
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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.