Finding the Fourth Proportional to 305,873.21, 422,165.42 and 195,421.21
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Solution
The fourth proportional to 305,873.21, 422,165.42 and 195,421.21 is: 269,719.85
Step by Step Solution
- Step 1: Write the proportion equation
305,873.21 : 422,165.42 = 195,421.21 : x - Step 2: Convert to fraction form
305,873.21/422,165.42 = 195,421.21/x - Step 3: Cross multiply
305,873.21x = 422,165.42 × 195,421.21 - Step 4: Simplify right side
305,873.21x = 82,500,075,896.87 - Step 5: Solve for x
x = 82,500,075,896.87/305,873.21 - Step 6: Final answer
x = 269,719.85
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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.