Finding the Fourth Proportional to 421,929.91, 582,268.74 and 230,939.20
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Solution
The fourth proportional to 421,929.91, 582,268.74 and 230,939.20 is: 318,699.09
Step by Step Solution
- Step 1: Write the proportion equation
421,929.91 : 582,268.74 = 230,939.20 : x - Step 2: Convert to fraction form
421,929.91/582,268.74 = 230,939.20/x - Step 3: Cross multiply
421,929.91x = 582,268.74 × 230,939.20 - Step 4: Simplify right side
421,929.91x = 134,468,677,000.61 - Step 5: Solve for x
x = 134,468,677,000.61/421,929.91 - Step 6: Final answer
x = 318,699.09
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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.