Finding the Fourth Proportional to 290,122.80, 434,723.40 and 243,121.20
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Solution
The fourth proportional to 290,122.80, 434,723.40 and 243,121.20 is: 364,295.65
Step by Step Solution
- Step 1: Write the proportion equation
290,122.80 : 434,723.40 = 243,121.20 : x - Step 2: Convert to fraction form
290,122.80/434,723.40 = 243,121.20/x - Step 3: Cross multiply
290,122.80x = 434,723.40 × 243,121.20 - Step 4: Simplify right side
290,122.80x = 105,690,474,676.08 - Step 5: Solve for x
x = 105,690,474,676.08/290,122.80 - Step 6: Final answer
x = 364,295.65
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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.