Finding the Fourth Proportional to 354,485.28, 489,290.85 and 201,605.88
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Solution
The fourth proportional to 354,485.28, 489,290.85 and 201,605.88 is: 278,273.65
Step by Step Solution
- Step 1: Write the proportion equation
354,485.28 : 489,290.85 = 201,605.88 : x - Step 2: Convert to fraction form
354,485.28/489,290.85 = 201,605.88/x - Step 3: Cross multiply
354,485.28x = 489,290.85 × 201,605.88 - Step 4: Simplify right side
354,485.28x = 98,643,912,390.20 - Step 5: Solve for x
x = 98,643,912,390.20/354,485.28 - Step 6: Final answer
x = 278,273.65
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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.