Finding the Fourth Proportional to 343,959.80, 515,939.70 and 330,181.70
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Solution
The fourth proportional to 343,959.80, 515,939.70 and 330,181.70 is: 495,272.55
Step by Step Solution
- Step 1: Write the proportion equation
343,959.80 : 515,939.70 = 330,181.70 : x - Step 2: Convert to fraction form
343,959.80/515,939.70 = 330,181.70/x - Step 3: Cross multiply
343,959.80x = 515,939.70 × 330,181.70 - Step 4: Simplify right side
343,959.80x = 170,353,847,243.49 - Step 5: Solve for x
x = 170,353,847,243.49/343,959.80 - Step 6: Final answer
x = 495,272.55
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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.