Finding the Fourth Proportional to 221,679.36, 305,919.36 and 121,076.64
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Solution
The fourth proportional to 221,679.36, 305,919.36 and 121,076.64 is: 167,086.77
Step by Step Solution
- Step 1: Write the proportion equation
221,679.36 : 305,919.36 = 121,076.64 : x - Step 2: Convert to fraction form
221,679.36/305,919.36 = 121,076.64/x - Step 3: Cross multiply
221,679.36x = 305,919.36 × 121,076.64 - Step 4: Simplify right side
221,679.36x = 37,039,688,219.75 - Step 5: Solve for x
x = 37,039,688,219.75/221,679.36 - Step 6: Final answer
x = 167,086.77
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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.