Finding the Fourth Proportional to 276,286.12, 381,274.27 and 155,427.40
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Solution
The fourth proportional to 276,286.12, 381,274.27 and 155,427.40 is: 214,489.49
Step by Step Solution
- Step 1: Write the proportion equation
276,286.12 : 381,274.27 = 155,427.40 : x - Step 2: Convert to fraction form
276,286.12/381,274.27 = 155,427.40/x - Step 3: Cross multiply
276,286.12x = 381,274.27 × 155,427.40 - Step 4: Simplify right side
276,286.12x = 59,260,469,792.15 - Step 5: Solve for x
x = 59,260,469,792.15/276,286.12 - Step 6: Final answer
x = 214,489.49
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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.