Finding the Fourth Proportional to 342,121.20, 513,181.80 and 202,153.20
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Solution
The fourth proportional to 342,121.20, 513,181.80 and 202,153.20 is: 303,229.80
Step by Step Solution
- Step 1: Write the proportion equation
342,121.20 : 513,181.80 = 202,153.20 : x - Step 2: Convert to fraction form
342,121.20/513,181.80 = 202,153.20/x - Step 3: Cross multiply
342,121.20x = 513,181.80 × 202,153.20 - Step 4: Simplify right side
342,121.20x = 103,741,343,051.76 - Step 5: Solve for x
x = 103,741,343,051.76/342,121.20 - Step 6: Final answer
x = 303,229.80
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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.