Finding the Fourth Proportional to 490,859.21, 736,289.82 and 135,874.28
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Solution
The fourth proportional to 490,859.21, 736,289.82 and 135,874.28 is: 203,811.70
Step by Step Solution
- Step 1: Write the proportion equation
490,859.21 : 736,289.82 = 135,874.28 : x - Step 2: Convert to fraction form
490,859.21/736,289.82 = 135,874.28/x - Step 3: Cross multiply
490,859.21x = 736,289.82 × 135,874.28 - Step 4: Simplify right side
490,859.21x = 100,042,849,163.83 - Step 5: Solve for x
x = 100,042,849,163.83/490,859.21 - Step 6: Final answer
x = 203,811.70
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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.