Finding the Fourth Proportional to 354,431.14, 489,115.78 and 201,470.32
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Solution
The fourth proportional to 354,431.14, 489,115.78 and 201,470.32 is: 278,029.50
Step by Step Solution
- Step 1: Write the proportion equation
354,431.14 : 489,115.78 = 201,470.32 : x - Step 2: Convert to fraction form
354,431.14/489,115.78 = 201,470.32/x - Step 3: Cross multiply
354,431.14x = 489,115.78 × 201,470.32 - Step 4: Simplify right side
354,431.14x = 98,542,312,713.65 - Step 5: Solve for x
x = 98,542,312,713.65/354,431.14 - Step 6: Final answer
x = 278,029.50
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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.