Finding the Fourth Proportional to 259,069.26, 388,617.76 and 81,590.09
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Solution
The fourth proportional to 259,069.26, 388,617.76 and 81,590.09 is: 122,389.50
Step by Step Solution
- Step 1: Write the proportion equation
259,069.26 : 388,617.76 = 81,590.09 : x - Step 2: Convert to fraction form
259,069.26/388,617.76 = 81,590.09/x - Step 3: Cross multiply
259,069.26x = 388,617.76 × 81,590.09 - Step 4: Simplify right side
259,069.26x = 31,707,358,014.00 - Step 5: Solve for x
x = 31,707,358,014.00/259,069.26 - Step 6: Final answer
x = 122,389.50
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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.