Finding the Fourth Proportional to 236,849.12, 326,874.48 and 129,435.44
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Solution
The fourth proportional to 236,849.12, 326,874.48 and 129,435.44 is: 178,633.31
Step by Step Solution
- Step 1: Write the proportion equation
236,849.12 : 326,874.48 = 129,435.44 : x - Step 2: Convert to fraction form
236,849.12/326,874.48 = 129,435.44/x - Step 3: Cross multiply
236,849.12x = 326,874.48 × 129,435.44 - Step 4: Simplify right side
236,849.12x = 42,309,142,143.57 - Step 5: Solve for x
x = 42,309,142,143.57/236,849.12 - Step 6: Final answer
x = 178,633.31
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.