Finding the Fourth Proportional to 309,190.12, 426,716.76 and 173,246.20
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Solution
The fourth proportional to 309,190.12, 426,716.76 and 173,246.20 is: 239,099.03
Step by Step Solution
- Step 1: Write the proportion equation
309,190.12 : 426,716.76 = 173,246.20 : x - Step 2: Convert to fraction form
309,190.12/426,716.76 = 173,246.20/x - Step 3: Cross multiply
309,190.12x = 426,716.76 × 173,246.20 - Step 4: Simplify right side
309,190.12x = 73,927,057,146.31 - Step 5: Solve for x
x = 73,927,057,146.31/309,190.12 - Step 6: Final answer
x = 239,099.03
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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.