Finding the Fourth Proportional to 319,912.13, 479,734.20 and 130,243.50
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Solution
The fourth proportional to 319,912.13, 479,734.20 and 130,243.50 is: 195,310.70
Step by Step Solution
- Step 1: Write the proportion equation
319,912.13 : 479,734.20 = 130,243.50 : x - Step 2: Convert to fraction form
319,912.13/479,734.20 = 130,243.50/x - Step 3: Cross multiply
319,912.13x = 479,734.20 × 130,243.50 - Step 4: Simplify right side
319,912.13x = 62,482,261,277.70 - Step 5: Solve for x
x = 62,482,261,277.70/319,912.13 - Step 6: Final answer
x = 195,310.70
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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.