Finding the Fourth Proportional to 312,486.63, 431,231.56 and 169,246.68
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Solution
The fourth proportional to 312,486.63, 431,231.56 and 169,246.68 is: 233,560.42
Step by Step Solution
- Step 1: Write the proportion equation
312,486.63 : 431,231.56 = 169,246.68 : x - Step 2: Convert to fraction form
312,486.63/431,231.56 = 169,246.68/x - Step 3: Cross multiply
312,486.63x = 431,231.56 × 169,246.68 - Step 4: Simplify right side
312,486.63x = 72,984,507,800.99 - Step 5: Solve for x
x = 72,984,507,800.99/312,486.63 - Step 6: Final answer
x = 233,560.42
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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.