Finding the Fourth Proportional to 236,391.75, 326,226.42 and 128,971.98
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Solution
The fourth proportional to 236,391.75, 326,226.42 and 128,971.98 is: 177,984.50
Step by Step Solution
- Step 1: Write the proportion equation
236,391.75 : 326,226.42 = 128,971.98 : x - Step 2: Convert to fraction form
236,391.75/326,226.42 = 128,971.98/x - Step 3: Cross multiply
236,391.75x = 326,226.42 × 128,971.98 - Step 4: Simplify right side
236,391.75x = 42,074,067,315.71 - Step 5: Solve for x
x = 42,074,067,315.71/236,391.75 - Step 6: Final answer
x = 177,984.50
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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.