Finding the Fourth Proportional to 221,598.75, 305,807.09 and 120,996.75
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Solution
The fourth proportional to 221,598.75, 305,807.09 and 120,996.75 is: 166,975.96
Step by Step Solution
- Step 1: Write the proportion equation
221,598.75 : 305,807.09 = 120,996.75 : x - Step 2: Convert to fraction form
221,598.75/305,807.09 = 120,996.75/x - Step 3: Cross multiply
221,598.75x = 305,807.09 × 120,996.75 - Step 4: Simplify right side
221,598.75x = 37,001,664,016.96 - Step 5: Solve for x
x = 37,001,664,016.96/221,598.75 - Step 6: Final answer
x = 166,975.96
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1.5x scale
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.