Finding the Fourth Proportional to 485,786.70, 728,680.05 and 170,202.60
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Solution
The fourth proportional to 485,786.70, 728,680.05 and 170,202.60 is: 255,303.90
Step by Step Solution
- Step 1: Write the proportion equation
485,786.70 : 728,680.05 = 170,202.60 : x - Step 2: Convert to fraction form
485,786.70/728,680.05 = 170,202.60/x - Step 3: Cross multiply
485,786.70x = 728,680.05 × 170,202.60 - Step 4: Simplify right side
485,786.70x = 124,023,239,078.13 - Step 5: Solve for x
x = 124,023,239,078.13/485,786.70 - Step 6: Final answer
x = 255,303.90
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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.