Finding the Fourth Proportional to 321,203.79, 481,641.63 and 118,789.65
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Solution
The fourth proportional to 321,203.79, 481,641.63 and 118,789.65 is: 178,123.80
Step by Step Solution
- Step 1: Write the proportion equation
321,203.79 : 481,641.63 = 118,789.65 : x - Step 2: Convert to fraction form
321,203.79/481,641.63 = 118,789.65/x - Step 3: Cross multiply
321,203.79x = 481,641.63 × 118,789.65 - Step 4: Simplify right side
321,203.79x = 57,214,040,653.13 - Step 5: Solve for x
x = 57,214,040,653.13/321,203.79 - Step 6: Final answer
x = 178,123.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.