Finding the Fourth Proportional to 213,163.20, 319,744.80 and 134,431.20
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Solution
The fourth proportional to 213,163.20, 319,744.80 and 134,431.20 is: 201,646.80
Step by Step Solution
- Step 1: Write the proportion equation
213,163.20 : 319,744.80 = 134,431.20 : x - Step 2: Convert to fraction form
213,163.20/319,744.80 = 134,431.20/x - Step 3: Cross multiply
213,163.20x = 319,744.80 × 134,431.20 - Step 4: Simplify right side
213,163.20x = 42,983,677,157.76 - Step 5: Solve for x
x = 42,983,677,157.76/213,163.20 - Step 6: Final answer
x = 201,646.80
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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.