Finding the Fourth Proportional to 312,448.20, 431,177.86 and 169,207.80
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Solution
The fourth proportional to 312,448.20, 431,177.86 and 169,207.80 is: 233,506.41
Step by Step Solution
- Step 1: Write the proportion equation
312,448.20 : 431,177.86 = 169,207.80 : x - Step 2: Convert to fraction form
312,448.20/431,177.86 = 169,207.80/x - Step 3: Cross multiply
312,448.20x = 431,177.86 × 169,207.80 - Step 4: Simplify right side
312,448.20x = 72,958,657,099.31 - Step 5: Solve for x
x = 72,958,657,099.31/312,448.20 - Step 6: Final answer
x = 233,506.41
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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.