Finding the Fourth Proportional to 388,042.24, 582,158.40 and 135,287.68
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Solution
The fourth proportional to 388,042.24, 582,158.40 and 135,287.68 is: 202,964.65
Step by Step Solution
- Step 1: Write the proportion equation
388,042.24 : 582,158.40 = 135,287.68 : x - Step 2: Convert to fraction form
388,042.24/582,158.40 = 135,287.68/x - Step 3: Cross multiply
388,042.24x = 582,158.40 × 135,287.68 - Step 4: Simplify right side
388,042.24x = 78,758,859,328.51 - Step 5: Solve for x
x = 78,758,859,328.51/388,042.24 - Step 6: Final answer
x = 202,964.65
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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.