Finding the Fourth Proportional to 392,991.44, 542,328.08 and 214,143.44
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Solution
The fourth proportional to 392,991.44, 542,328.08 and 214,143.44 is: 295,517.89
Step by Step Solution
- Step 1: Write the proportion equation
392,991.44 : 542,328.08 = 214,143.44 : x - Step 2: Convert to fraction form
392,991.44/542,328.08 = 214,143.44/x - Step 3: Cross multiply
392,991.44x = 542,328.08 × 214,143.44 - Step 4: Simplify right side
392,991.44x = 116,136,000,659.80 - Step 5: Solve for x
x = 116,136,000,659.80/392,991.44 - Step 6: Final answer
x = 295,517.89
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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.