Finding the Fourth Proportional to 209,981.70, 289,776.11 and 114,489.99
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Solution
The fourth proportional to 209,981.70, 289,776.11 and 114,489.99 is: 157,996.93
Step by Step Solution
- Step 1: Write the proportion equation
209,981.70 : 289,776.11 = 114,489.99 : x - Step 2: Convert to fraction form
209,981.70/289,776.11 = 114,489.99/x - Step 3: Cross multiply
209,981.70x = 289,776.11 × 114,489.99 - Step 4: Simplify right side
209,981.70x = 33,176,463,363.69 - Step 5: Solve for x
x = 33,176,463,363.69/209,981.70 - Step 6: Final answer
x = 157,996.93
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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.