Finding the Fourth Proportional to 220,069.51, 303,722.74 and 129,421.09
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Solution
The fourth proportional to 220,069.51, 303,722.74 and 129,421.09 is: 178,616.88
Step by Step Solution
- Step 1: Write the proportion equation
220,069.51 : 303,722.74 = 129,421.09 : x - Step 2: Convert to fraction form
220,069.51/303,722.74 = 129,421.09/x - Step 3: Cross multiply
220,069.51x = 303,722.74 × 129,421.09 - Step 4: Simplify right side
220,069.51x = 39,308,128,246.02 - Step 5: Solve for x
x = 39,308,128,246.02/220,069.51 - Step 6: Final answer
x = 178,616.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.