Finding the Fourth Proportional to 281,305.12, 421,912.18 and 103,895.68
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Solution
The fourth proportional to 281,305.12, 421,912.18 and 103,895.68 is: 155,826.72
Step by Step Solution
- Step 1: Write the proportion equation
281,305.12 : 421,912.18 = 103,895.68 : x - Step 2: Convert to fraction form
281,305.12/421,912.18 = 103,895.68/x - Step 3: Cross multiply
281,305.12x = 421,912.18 × 103,895.68 - Step 4: Simplify right side
281,305.12x = 43,834,852,841.38 - Step 5: Solve for x
x = 43,834,852,841.38/281,305.12 - Step 6: Final answer
x = 155,826.72
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.