Finding the Fourth Proportional to 259,719.80, 389,579.70 and 206,575.70
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Solution
The fourth proportional to 259,719.80, 389,579.70 and 206,575.70 is: 309,863.55
Step by Step Solution
- Step 1: Write the proportion equation
259,719.80 : 389,579.70 = 206,575.70 : x - Step 2: Convert to fraction form
259,719.80/389,579.70 = 206,575.70/x - Step 3: Cross multiply
259,719.80x = 389,579.70 × 206,575.70 - Step 4: Simplify right side
259,719.80x = 80,477,699,233.29 - Step 5: Solve for x
x = 80,477,699,233.29/259,719.80 - Step 6: Final answer
x = 309,863.55
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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.