Finding the Fourth Proportional to 266,987.70, 400,481.55 and 109,163.70
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Solution
The fourth proportional to 266,987.70, 400,481.55 and 109,163.70 is: 163,745.55
Step by Step Solution
- Step 1: Write the proportion equation
266,987.70 : 400,481.55 = 109,163.70 : x - Step 2: Convert to fraction form
266,987.70/400,481.55 = 109,163.70/x - Step 3: Cross multiply
266,987.70x = 400,481.55 × 109,163.70 - Step 4: Simplify right side
266,987.70x = 43,718,047,779.74 - Step 5: Solve for x
x = 43,718,047,779.74/266,987.70 - Step 6: Final answer
x = 163,745.55
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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.