Finding the Fourth Proportional to 213,791.28, 320,409.36 and 87,283.44
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Solution
The fourth proportional to 213,791.28, 320,409.36 and 87,283.44 is: 130,811.84
Step by Step Solution
- Step 1: Write the proportion equation
213,791.28 : 320,409.36 = 87,283.44 : x - Step 2: Convert to fraction form
213,791.28/320,409.36 = 87,283.44/x - Step 3: Cross multiply
213,791.28x = 320,409.36 × 87,283.44 - Step 4: Simplify right side
213,791.28x = 27,966,431,149.00 - Step 5: Solve for x
x = 27,966,431,149.00/213,791.28 - Step 6: Final answer
x = 130,811.84
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1.5x scale
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.