Finding the Fourth Proportional to 820,217.95, 1,230,391.34 and 221,170.09
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Solution
The fourth proportional to 820,217.95, 1,230,391.34 and 221,170.09 is: 331,772.50
Step by Step Solution
- Step 1: Write the proportion equation
820,217.95 : 1,230,391.34 = 221,170.09 : x - Step 2: Convert to fraction form
820,217.95/1,230,391.34 = 221,170.09/x - Step 3: Cross multiply
820,217.95x = 1,230,391.34 × 221,170.09 - Step 4: Simplify right side
820,217.95x = 272,125,763,403.02 - Step 5: Solve for x
x = 272,125,763,403.02/820,217.95 - Step 6: Final answer
x = 331,772.50
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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.