Finding the Fourth Proportional to 213,620.40, 320,438.16 and 73,378.08
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Solution
The fourth proportional to 213,620.40, 320,438.16 and 73,378.08 is: 110,069.72
Step by Step Solution
- Step 1: Write the proportion equation
213,620.40 : 320,438.16 = 73,378.08 : x - Step 2: Convert to fraction form
213,620.40/320,438.16 = 73,378.08/x - Step 3: Cross multiply
213,620.40x = 320,438.16 × 73,378.08 - Step 4: Simplify right side
213,620.40x = 23,513,136,939.53 - Step 5: Solve for x
x = 23,513,136,939.53/213,620.40 - Step 6: Final answer
x = 110,069.72
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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.