Finding the Fourth Proportional to 486,311.70, 729,121.95 and 220,199.70
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Solution
The fourth proportional to 486,311.70, 729,121.95 and 220,199.70 is: 330,143.06
Step by Step Solution
- Step 1: Write the proportion equation
486,311.70 : 729,121.95 = 220,199.70 : x - Step 2: Convert to fraction form
486,311.70/729,121.95 = 220,199.70/x - Step 3: Cross multiply
486,311.70x = 729,121.95 × 220,199.70 - Step 4: Simplify right side
486,311.70x = 160,552,434,653.42 - Step 5: Solve for x
x = 160,552,434,653.42/486,311.70 - Step 6: Final answer
x = 330,143.06
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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.