Finding the Fourth Proportional to 362,138.40, 542,991.60 and 221,997.60
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Solution
The fourth proportional to 362,138.40, 542,991.60 and 221,997.60 is: 332,863.99
Step by Step Solution
- Step 1: Write the proportion equation
362,138.40 : 542,991.60 = 221,997.60 : x - Step 2: Convert to fraction form
362,138.40/542,991.60 = 221,997.60/x - Step 3: Cross multiply
362,138.40x = 542,991.60 × 221,997.60 - Step 4: Simplify right side
362,138.40x = 120,542,832,020.16 - Step 5: Solve for x
x = 120,542,832,020.16/362,138.40 - Step 6: Final answer
x = 332,863.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.