Finding the Fourth Proportional to 858,135.20, 1,287,202.80 and 227,112.80
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Solution
The fourth proportional to 858,135.20, 1,287,202.80 and 227,112.80 is: 340,669.20
Step by Step Solution
- Step 1: Write the proportion equation
858,135.20 : 1,287,202.80 = 227,112.80 : x - Step 2: Convert to fraction form
858,135.20/1,287,202.80 = 227,112.80/x - Step 3: Cross multiply
858,135.20x = 1,287,202.80 × 227,112.80 - Step 4: Simplify right side
858,135.20x = 292,340,232,075.84 - Step 5: Solve for x
x = 292,340,232,075.84/858,135.20 - Step 6: Final answer
x = 340,669.20
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1.5x scale
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.