Finding the Fourth Proportional to 397,731.20, 548,863.36 and 218,883.20
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Solution
The fourth proportional to 397,731.20, 548,863.36 and 218,883.20 is: 302,055.68
Step by Step Solution
- Step 1: Write the proportion equation
397,731.20 : 548,863.36 = 218,883.20 : x - Step 2: Convert to fraction form
397,731.20/548,863.36 = 218,883.20/x - Step 3: Cross multiply
397,731.20x = 548,863.36 × 218,883.20 - Step 4: Simplify right side
397,731.20x = 120,136,968,599.55 - Step 5: Solve for x
x = 120,136,968,599.55/397,731.20 - Step 6: Final answer
x = 302,055.68
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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.