Finding the Fourth Proportional to 324,640.20, 486,629.10 and 219,469.80
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Solution
The fourth proportional to 324,640.20, 486,629.10 and 219,469.80 is: 328,980.80
Step by Step Solution
- Step 1: Write the proportion equation
324,640.20 : 486,629.10 = 219,469.80 : x - Step 2: Convert to fraction form
324,640.20/486,629.10 = 219,469.80/x - Step 3: Cross multiply
324,640.20x = 486,629.10 × 219,469.80 - Step 4: Simplify right side
324,640.20x = 106,800,391,251.18 - Step 5: Solve for x
x = 106,800,391,251.18/324,640.20 - Step 6: Final answer
x = 328,980.80
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1.5x scale
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.