Finding the Fourth Proportional to 272,489.80, 408,734.70 and 209,431.30
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Solution
The fourth proportional to 272,489.80, 408,734.70 and 209,431.30 is: 314,146.95
Step by Step Solution
- Step 1: Write the proportion equation
272,489.80 : 408,734.70 = 209,431.30 : x - Step 2: Convert to fraction form
272,489.80/408,734.70 = 209,431.30/x - Step 3: Cross multiply
272,489.80x = 408,734.70 × 209,431.30 - Step 4: Simplify right side
272,489.80x = 85,601,839,576.11 - Step 5: Solve for x
x = 85,601,839,576.11/272,489.80 - Step 6: Final answer
x = 314,146.95
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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.