Finding the Fourth Proportional to 399,840.12, 599,858.64 and 281,742.12
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Solution
The fourth proportional to 399,840.12, 599,858.64 and 281,742.12 is: 422,682.56
Step by Step Solution
- Step 1: Write the proportion equation
399,840.12 : 599,858.64 = 281,742.12 : x - Step 2: Convert to fraction form
399,840.12/599,858.64 = 281,742.12/x - Step 3: Cross multiply
399,840.12x = 599,858.64 × 281,742.12 - Step 4: Simplify right side
399,840.12x = 169,005,444,933.92 - Step 5: Solve for x
x = 169,005,444,933.92/399,840.12 - Step 6: Final answer
x = 422,682.56
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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.