Finding the Fourth Proportional to 290,511.98, 435,793.09 and 80,149.92
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Solution
The fourth proportional to 290,511.98, 435,793.09 and 80,149.92 is: 120,231.81
Step by Step Solution
- Step 1: Write the proportion equation
290,511.98 : 435,793.09 = 80,149.92 : x - Step 2: Convert to fraction form
290,511.98/435,793.09 = 80,149.92/x - Step 3: Cross multiply
290,511.98x = 435,793.09 × 80,149.92 - Step 4: Simplify right side
290,511.98x = 34,928,781,300.05 - Step 5: Solve for x
x = 34,928,781,300.05/290,511.98 - Step 6: Final answer
x = 120,231.81
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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.