Finding the Fourth Proportional to 289,356.09, 399,449.79 and 192,720.66
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Solution
The fourth proportional to 289,356.09, 399,449.79 and 192,720.66 is: 266,046.68
Step by Step Solution
- Step 1: Write the proportion equation
289,356.09 : 399,449.79 = 192,720.66 : x - Step 2: Convert to fraction form
289,356.09/399,449.79 = 192,720.66/x - Step 3: Cross multiply
289,356.09x = 399,449.79 × 192,720.66 - Step 4: Simplify right side
289,356.09x = 76,982,227,165.66 - Step 5: Solve for x
x = 76,982,227,165.66/289,356.09 - Step 6: Final answer
x = 266,046.68
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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.