Finding the Fourth Proportional to 221,258.21, 305,257.60 and 130,568.79
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Solution
The fourth proportional to 221,258.21, 305,257.60 and 130,568.79 is: 180,138.47
Step by Step Solution
- Step 1: Write the proportion equation
221,258.21 : 305,257.60 = 130,568.79 : x - Step 2: Convert to fraction form
221,258.21/305,257.60 = 130,568.79/x - Step 3: Cross multiply
221,258.21x = 305,257.60 × 130,568.79 - Step 4: Simplify right side
221,258.21x = 39,857,115,143.88 - Step 5: Solve for x
x = 39,857,115,143.88/221,258.21 - Step 6: Final answer
x = 180,138.47
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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.