Finding the Fourth Proportional to 312,783.07, 431,629.08 and 169,540.04
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Solution
The fourth proportional to 312,783.07, 431,629.08 and 169,540.04 is: 233,958.99
Step by Step Solution
- Step 1: Write the proportion equation
312,783.07 : 431,629.08 = 169,540.04 : x - Step 2: Convert to fraction form
312,783.07/431,629.08 = 169,540.04/x - Step 3: Cross multiply
312,783.07x = 431,629.08 × 169,540.04 - Step 4: Simplify right side
312,783.07x = 73,178,411,488.36 - Step 5: Solve for x
x = 73,178,411,488.36/312,783.07 - Step 6: Final answer
x = 233,958.99
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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.