Finding the Fourth Proportional to 290,015.20, 434,439.60 and 195,536.80
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Solution
The fourth proportional to 290,015.20, 434,439.60 and 195,536.80 is: 292,911.99
Step by Step Solution
- Step 1: Write the proportion equation
290,015.20 : 434,439.60 = 195,536.80 : x - Step 2: Convert to fraction form
290,015.20/434,439.60 = 195,536.80/x - Step 3: Cross multiply
290,015.20x = 434,439.60 × 195,536.80 - Step 4: Simplify right side
290,015.20x = 84,948,929,177.28 - Step 5: Solve for x
x = 84,948,929,177.28/290,015.20 - Step 6: Final answer
x = 292,911.99
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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.