Finding the Fourth Proportional to 743,266.20, 1,115,336.70 and 269,999.40
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Solution
The fourth proportional to 743,266.20, 1,115,336.70 and 269,999.40 is: 405,157.99
Step by Step Solution
- Step 1: Write the proportion equation
743,266.20 : 1,115,336.70 = 269,999.40 : x - Step 2: Convert to fraction form
743,266.20/1,115,336.70 = 269,999.40/x - Step 3: Cross multiply
743,266.20x = 1,115,336.70 × 269,999.40 - Step 4: Simplify right side
743,266.20x = 301,140,239,797.98 - Step 5: Solve for x
x = 301,140,239,797.98/743,266.20 - Step 6: Final answer
x = 405,157.99
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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.