Finding the Fourth Proportional to 311,858.65, 430,266.69 and 190,873.81
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Solution
The fourth proportional to 311,858.65, 430,266.69 and 190,873.81 is: 263,345.72
Step by Step Solution
- Step 1: Write the proportion equation
311,858.65 : 430,266.69 = 190,873.81 : x - Step 2: Convert to fraction form
311,858.65/430,266.69 = 190,873.81/x - Step 3: Cross multiply
311,858.65x = 430,266.69 × 190,873.81 - Step 4: Simplify right side
311,858.65x = 82,126,640,285.06 - Step 5: Solve for x
x = 82,126,640,285.06/311,858.65 - Step 6: Final answer
x = 263,345.72
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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.