Finding the Fourth Proportional to 312,447.12, 431,177.40 and 169,207.38
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Solution
The fourth proportional to 312,447.12, 431,177.40 and 169,207.38 is: 233,506.39
Step by Step Solution
- Step 1: Write the proportion equation
312,447.12 : 431,177.40 = 169,207.38 : x - Step 2: Convert to fraction form
312,447.12/431,177.40 = 169,207.38/x - Step 3: Cross multiply
312,447.12x = 431,177.40 × 169,207.38 - Step 4: Simplify right side
312,447.12x = 72,958,398,169.21 - Step 5: Solve for x
x = 72,958,398,169.21/312,447.12 - Step 6: Final answer
x = 233,506.39
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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.