Finding the Fourth Proportional to 299,771.20, 449,656.80 and 159,803.20
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Solution
The fourth proportional to 299,771.20, 449,656.80 and 159,803.20 is: 239,704.80
Step by Step Solution
- Step 1: Write the proportion equation
299,771.20 : 449,656.80 = 159,803.20 : x - Step 2: Convert to fraction form
299,771.20/449,656.80 = 159,803.20/x - Step 3: Cross multiply
299,771.20x = 449,656.80 × 159,803.20 - Step 4: Simplify right side
299,771.20x = 71,856,595,541.76 - Step 5: Solve for x
x = 71,856,595,541.76/299,771.20 - Step 6: Final answer
x = 239,704.80
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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.