Finding the Fourth Proportional to 343,997.80, 515,996.70 and 330,219.70
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Solution
The fourth proportional to 343,997.80, 515,996.70 and 330,219.70 is: 495,329.55
Step by Step Solution
- Step 1: Write the proportion equation
343,997.80 : 515,996.70 = 330,219.70 : x - Step 2: Convert to fraction form
343,997.80/515,996.70 = 330,219.70/x - Step 3: Cross multiply
343,997.80x = 515,996.70 × 330,219.70 - Step 4: Simplify right side
343,997.80x = 170,392,275,474.99 - Step 5: Solve for x
x = 170,392,275,474.99/343,997.80 - Step 6: Final answer
x = 495,329.55
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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.