Finding the Fourth Proportional to 313,036.11, 431,986.77 and 169,794.09
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Solution
The fourth proportional to 313,036.11, 431,986.77 and 169,794.09 is: 234,314.18
Step by Step Solution
- Step 1: Write the proportion equation
313,036.11 : 431,986.77 = 169,794.09 : x - Step 2: Convert to fraction form
313,036.11/431,986.77 = 169,794.09/x - Step 3: Cross multiply
313,036.11x = 431,986.77 × 169,794.09 - Step 4: Simplify right side
313,036.11x = 73,348,800,504.19 - Step 5: Solve for x
x = 73,348,800,504.19/313,036.11 - Step 6: Final answer
x = 234,314.18
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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.