Finding the Fourth Proportional to 209,601.99, 289,246.15 and 122,402.07
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Solution
The fourth proportional to 209,601.99, 289,246.15 and 122,402.07 is: 168,912.17
Step by Step Solution
- Step 1: Write the proportion equation
209,601.99 : 289,246.15 = 122,402.07 : x - Step 2: Convert to fraction form
209,601.99/289,246.15 = 122,402.07/x - Step 3: Cross multiply
209,601.99x = 289,246.15 × 122,402.07 - Step 4: Simplify right side
209,601.99x = 35,404,327,499.53 - Step 5: Solve for x
x = 35,404,327,499.53/209,601.99 - Step 6: Final answer
x = 168,912.17
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1.5x scale
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.