Finding the Fourth Proportional to 209,643.95, 289,269.16 and 123,629.99
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Solution
The fourth proportional to 209,643.95, 289,269.16 and 123,629.99 is: 170,586.09
Step by Step Solution
- Step 1: Write the proportion equation
209,643.95 : 289,269.16 = 123,629.99 : x - Step 2: Convert to fraction form
209,643.95/289,269.16 = 123,629.99/x - Step 3: Cross multiply
209,643.95x = 289,269.16 × 123,629.99 - Step 4: Simplify right side
209,643.95x = 35,762,341,602.69 - Step 5: Solve for x
x = 35,762,341,602.69/209,643.95 - Step 6: Final answer
x = 170,586.09
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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.