Finding the Fourth Proportional to 490,163.20, 735,244.80 and 157,739.20
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Solution
The fourth proportional to 490,163.20, 735,244.80 and 157,739.20 is: 236,608.80
Step by Step Solution
- Step 1: Write the proportion equation
490,163.20 : 735,244.80 = 157,739.20 : x - Step 2: Convert to fraction form
490,163.20/735,244.80 = 157,739.20/x - Step 3: Cross multiply
490,163.20x = 735,244.80 × 157,739.20 - Step 4: Simplify right side
490,163.20x = 115,976,926,556.16 - Step 5: Solve for x
x = 115,976,926,556.16/490,163.20 - Step 6: Final answer
x = 236,608.80
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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.