Finding the Fourth Proportional to 194,638.20, 291,374.10 and 115,711.80
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Solution
The fourth proportional to 194,638.20, 291,374.10 and 115,711.80 is: 173,220.99
Step by Step Solution
- Step 1: Write the proportion equation
194,638.20 : 291,374.10 = 115,711.80 : x - Step 2: Convert to fraction form
194,638.20/291,374.10 = 115,711.80/x - Step 3: Cross multiply
194,638.20x = 291,374.10 × 115,711.80 - Step 4: Simplify right side
194,638.20x = 33,715,421,584.38 - Step 5: Solve for x
x = 33,715,421,584.38/194,638.20 - Step 6: Final answer
x = 173,220.99
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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.