Finding the Fourth Proportional to 720,121.20, 1,080,181.80 and 246,811.20
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Solution
The fourth proportional to 720,121.20, 1,080,181.80 and 246,811.20 is: 370,216.80
Step by Step Solution
- Step 1: Write the proportion equation
720,121.20 : 1,080,181.80 = 246,811.20 : x - Step 2: Convert to fraction form
720,121.20/1,080,181.80 = 246,811.20/x - Step 3: Cross multiply
720,121.20x = 1,080,181.80 × 246,811.20 - Step 4: Simplify right side
720,121.20x = 266,600,966,276.16 - Step 5: Solve for x
x = 266,600,966,276.16/720,121.20 - Step 6: Final answer
x = 370,216.80
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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.