Finding the Fourth Proportional to 193,471,231.20, 290,206,846.80 and 155,207,479.20
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Solution
The fourth proportional to 193,471,231.20, 290,206,846.80 and 155,207,479.20 is: 232,811,218.80
Step by Step Solution
- Step 1: Write the proportion equation
193,471,231.20 : 290,206,846.80 = 155,207,479.20 : x - Step 2: Convert to fraction form
193,471,231.20/290,206,846.80 = 155,207,479.20/x - Step 3: Cross multiply
193,471,231.20x = 290,206,846.80 × 155,207,479.20 - Step 4: Simplify right side
193,471,231.20x = 45,042,273,138,408,584 - Step 5: Solve for x
x = 45,042,273,138,408,584/193,471,231.20 - Step 6: Final answer
x = 232,811,218.80
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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.