Finding the Fourth Proportional to 259,842.36, 389,614.62 and 79,880.96
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Solution
The fourth proportional to 259,842.36, 389,614.62 and 79,880.96 is: 119,775.66
Step by Step Solution
- Step 1: Write the proportion equation
259,842.36 : 389,614.62 = 79,880.96 : x - Step 2: Convert to fraction form
259,842.36/389,614.62 = 79,880.96/x - Step 3: Cross multiply
259,842.36x = 389,614.62 × 79,880.96 - Step 4: Simplify right side
259,842.36x = 31,122,789,875.64 - Step 5: Solve for x
x = 31,122,789,875.64/259,842.36 - Step 6: Final answer
x = 119,775.66
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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.