Finding the Fourth Proportional to 361,431.07, 498,787.74 and 218,163.13
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Solution
The fourth proportional to 361,431.07, 498,787.74 and 218,163.13 is: 301,072.88
Step by Step Solution
- Step 1: Write the proportion equation
361,431.07 : 498,787.74 = 218,163.13 : x - Step 2: Convert to fraction form
361,431.07/498,787.74 = 218,163.13/x - Step 3: Cross multiply
361,431.07x = 498,787.74 × 218,163.13 - Step 4: Simplify right side
361,431.07x = 108,817,093,317.06 - Step 5: Solve for x
x = 108,817,093,317.06/361,431.07 - Step 6: Final answer
x = 301,072.88
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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.