Finding the Fourth Proportional to 312,609.98, 431,400.94 and 169,370.39
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Solution
The fourth proportional to 312,609.98, 431,400.94 and 169,370.39 is: 233,730.69
Step by Step Solution
- Step 1: Write the proportion equation
312,609.98 : 431,400.94 = 169,370.39 : x - Step 2: Convert to fraction form
312,609.98/431,400.94 = 169,370.39/x - Step 3: Cross multiply
312,609.98x = 431,400.94 × 169,370.39 - Step 4: Simplify right side
312,609.98x = 73,066,546,109.24 - Step 5: Solve for x
x = 73,066,546,109.24/312,609.98 - Step 6: Final answer
x = 233,730.69
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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.