Finding the Fourth Proportional to 421,990.36, 582,347.68 and 231,016.05
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Solution
The fourth proportional to 421,990.36, 582,347.68 and 231,016.05 is: 318,802.69
Step by Step Solution
- Step 1: Write the proportion equation
421,990.36 : 582,347.68 = 231,016.05 : x - Step 2: Convert to fraction form
421,990.36/582,347.68 = 231,016.05/x - Step 3: Cross multiply
421,990.36x = 582,347.68 × 231,016.05 - Step 4: Simplify right side
421,990.36x = 134,531,660,182.72 - Step 5: Solve for x
x = 134,531,660,182.72/421,990.36 - Step 6: Final answer
x = 318,802.69
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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.