Finding the Fourth Proportional to 272,447.42, 408,736.73 and 85,458.92
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Solution
The fourth proportional to 272,447.42, 408,736.73 and 85,458.92 is: 128,208.95
Step by Step Solution
- Step 1: Write the proportion equation
272,447.42 : 408,736.73 = 85,458.92 : x - Step 2: Convert to fraction form
272,447.42/408,736.73 = 85,458.92/x - Step 3: Cross multiply
272,447.42x = 408,736.73 × 85,458.92 - Step 4: Simplify right side
272,447.42x = 34,930,197,680.10 - Step 5: Solve for x
x = 34,930,197,680.10/272,447.42 - Step 6: Final answer
x = 128,208.95
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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.