Finding the Fourth Proportional to 281,735.12, 388,776.84 and 154,401.68
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Solution
The fourth proportional to 281,735.12, 388,776.84 and 154,401.68 is: 213,064.66
Step by Step Solution
- Step 1: Write the proportion equation
281,735.12 : 388,776.84 = 154,401.68 : x - Step 2: Convert to fraction form
281,735.12/388,776.84 = 154,401.68/x - Step 3: Cross multiply
281,735.12x = 388,776.84 × 154,401.68 - Step 4: Simplify right side
281,735.12x = 60,027,797,241.09 - Step 5: Solve for x
x = 60,027,797,241.09/281,735.12 - Step 6: Final answer
x = 213,064.66
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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.