Finding the Fourth Proportional to 221,029.75, 305,021.06 and 120,427.75
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Solution
The fourth proportional to 221,029.75, 305,021.06 and 120,427.75 is: 166,190.30
Step by Step Solution
- Step 1: Write the proportion equation
221,029.75 : 305,021.06 = 120,427.75 : x - Step 2: Convert to fraction form
221,029.75/305,021.06 = 120,427.75/x - Step 3: Cross multiply
221,029.75x = 305,021.06 × 120,427.75 - Step 4: Simplify right side
221,029.75x = 36,732,999,958.42 - Step 5: Solve for x
x = 36,732,999,958.42/221,029.75 - Step 6: Final answer
x = 166,190.30
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.