Finding the Fourth Proportional to 820,215.95, 1,230,388.34 and 221,168.09
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Solution
The fourth proportional to 820,215.95, 1,230,388.34 and 221,168.09 is: 331,769.50
Step by Step Solution
- Step 1: Write the proportion equation
820,215.95 : 1,230,388.34 = 221,168.09 : x - Step 2: Convert to fraction form
820,215.95/1,230,388.34 = 221,168.09/x - Step 3: Cross multiply
820,215.95x = 1,230,388.34 × 221,168.09 - Step 4: Simplify right side
820,215.95x = 272,122,631,858.29 - Step 5: Solve for x
x = 272,122,631,858.29/820,215.95 - Step 6: Final answer
x = 331,769.50
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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.