Finding the Fourth Proportional to 259,587.44, 389,235.36 and 82,139.12
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Solution
The fourth proportional to 259,587.44, 389,235.36 and 82,139.12 is: 123,162.55
Step by Step Solution
- Step 1: Write the proportion equation
259,587.44 : 389,235.36 = 82,139.12 : x - Step 2: Convert to fraction form
259,587.44/389,235.36 = 82,139.12/x - Step 3: Cross multiply
259,587.44x = 389,235.36 × 82,139.12 - Step 4: Simplify right side
259,587.44x = 31,971,449,943.28 - Step 5: Solve for x
x = 31,971,449,943.28/259,587.44 - Step 6: Final answer
x = 123,162.55
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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.