Finding the Fourth Proportional to 422,239.68, 582,699.21 and 231,253.09
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Solution
The fourth proportional to 422,239.68, 582,699.21 and 231,253.09 is: 319,133.89
Step by Step Solution
- Step 1: Write the proportion equation
422,239.68 : 582,699.21 = 231,253.09 : x - Step 2: Convert to fraction form
422,239.68/582,699.21 = 231,253.09/x - Step 3: Cross multiply
422,239.68x = 582,699.21 × 231,253.09 - Step 4: Simplify right side
422,239.68x = 134,750,992,853.06 - Step 5: Solve for x
x = 134,750,992,853.06/422,239.68 - Step 6: Final answer
x = 319,133.89
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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.