Finding the Fourth Proportional to 330,163.20, 495,244.80 and 80,845.20
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Solution
The fourth proportional to 330,163.20, 495,244.80 and 80,845.20 is: 121,267.80
Step by Step Solution
- Step 1: Write the proportion equation
330,163.20 : 495,244.80 = 80,845.20 : x - Step 2: Convert to fraction form
330,163.20/495,244.80 = 80,845.20/x - Step 3: Cross multiply
330,163.20x = 495,244.80 × 80,845.20 - Step 4: Simplify right side
330,163.20x = 40,038,164,904.96 - Step 5: Solve for x
x = 40,038,164,904.96/330,163.20 - Step 6: Final answer
x = 121,267.80
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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.