Finding the Fourth Proportional to 215,905.20, 323,857.80 and 68,161.20
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Solution
The fourth proportional to 215,905.20, 323,857.80 and 68,161.20 is: 102,241.80
Step by Step Solution
- Step 1: Write the proportion equation
215,905.20 : 323,857.80 = 68,161.20 : x - Step 2: Convert to fraction form
215,905.20/323,857.80 = 68,161.20/x - Step 3: Cross multiply
215,905.20x = 323,857.80 × 68,161.20 - Step 4: Simplify right side
215,905.20x = 22,074,536,277.36 - Step 5: Solve for x
x = 22,074,536,277.36/215,905.20 - Step 6: Final answer
x = 102,241.80
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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.