Finding the Fourth Proportional to 213,984.36, 321,012.99 and 107,419.14
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Solution
The fourth proportional to 213,984.36, 321,012.99 and 107,419.14 is: 161,147.01
Step by Step Solution
- Step 1: Write the proportion equation
213,984.36 : 321,012.99 = 107,419.14 : x - Step 2: Convert to fraction form
213,984.36/321,012.99 = 107,419.14/x - Step 3: Cross multiply
213,984.36x = 321,012.99 × 107,419.14 - Step 4: Simplify right side
213,984.36x = 34,482,939,314.63 - Step 5: Solve for x
x = 34,482,939,314.63/213,984.36 - Step 6: Final answer
x = 161,147.01
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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.