Finding the Fourth Proportional to 405,415.30, 608,197.07 and 135,517.90
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Solution
The fourth proportional to 405,415.30, 608,197.07 and 135,517.90 is: 203,301.63
Step by Step Solution
- Step 1: Write the proportion equation
405,415.30 : 608,197.07 = 135,517.90 : x - Step 2: Convert to fraction form
405,415.30/608,197.07 = 135,517.90/x - Step 3: Cross multiply
405,415.30x = 608,197.07 × 135,517.90 - Step 4: Simplify right side
405,415.30x = 82,421,589,712.55 - Step 5: Solve for x
x = 82,421,589,712.55/405,415.30 - Step 6: Final answer
x = 203,301.63
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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.