Finding the Fourth Proportional to 259,743.80, 389,615.70 and 206,599.70
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Solution
The fourth proportional to 259,743.80, 389,615.70 and 206,599.70 is: 309,899.55
Step by Step Solution
- Step 1: Write the proportion equation
259,743.80 : 389,615.70 = 206,599.70 : x - Step 2: Convert to fraction form
259,743.80/389,615.70 = 206,599.70/x - Step 3: Cross multiply
259,743.80x = 389,615.70 × 206,599.70 - Step 4: Simplify right side
259,743.80x = 80,494,486,735.29 - Step 5: Solve for x
x = 80,494,486,735.29/259,743.80 - Step 6: Final answer
x = 309,899.55
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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.