Finding the Fourth Proportional to 209,952.41, 289,739.84 and 129,433.14
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Solution
The fourth proportional to 209,952.41, 289,739.84 and 129,433.14 is: 178,621.13
Step by Step Solution
- Step 1: Write the proportion equation
209,952.41 : 289,739.84 = 129,433.14 : x - Step 2: Convert to fraction form
209,952.41/289,739.84 = 129,433.14/x - Step 3: Cross multiply
209,952.41x = 289,739.84 × 129,433.14 - Step 4: Simplify right side
209,952.41x = 37,501,936,627.13 - Step 5: Solve for x
x = 37,501,936,627.13/209,952.41 - Step 6: Final answer
x = 178,621.13
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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.