Finding the Fourth Proportional to 213,163.20, 320,306.40 and 118,468.80
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Solution
The fourth proportional to 213,163.20, 320,306.40 and 118,468.80 is: 178,015.32
Step by Step Solution
- Step 1: Write the proportion equation
213,163.20 : 320,306.40 = 118,468.80 : x - Step 2: Convert to fraction form
213,163.20/320,306.40 = 118,468.80/x - Step 3: Cross multiply
213,163.20x = 320,306.40 × 118,468.80 - Step 4: Simplify right side
213,163.20x = 37,946,314,840.32 - Step 5: Solve for x
x = 37,946,314,840.32/213,163.20 - Step 6: Final answer
x = 178,015.32
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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.