Finding the Fourth Proportional to 343,993.80, 515,990.70 and 330,215.70
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Solution
The fourth proportional to 343,993.80, 515,990.70 and 330,215.70 is: 495,323.55
Step by Step Solution
- Step 1: Write the proportion equation
343,993.80 : 515,990.70 = 330,215.70 : x - Step 2: Convert to fraction form
343,993.80/515,990.70 = 330,215.70/x - Step 3: Cross multiply
343,993.80x = 515,990.70 × 330,215.70 - Step 4: Simplify right side
343,993.80x = 170,388,230,193.99 - Step 5: Solve for x
x = 170,388,230,193.99/343,993.80 - Step 6: Final answer
x = 495,323.55
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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.