Finding the Fourth Proportional to 206,905.43, 310,351.98 and 57,154.70
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Solution
The fourth proportional to 206,905.43, 310,351.98 and 57,154.70 is: 85,730.34
Step by Step Solution
- Step 1: Write the proportion equation
206,905.43 : 310,351.98 = 57,154.70 : x - Step 2: Convert to fraction form
206,905.43/310,351.98 = 57,154.70/x - Step 3: Cross multiply
206,905.43x = 310,351.98 × 57,154.70 - Step 4: Simplify right side
206,905.43x = 17,738,072,759.55 - Step 5: Solve for x
x = 17,738,072,759.55/206,905.43 - Step 6: Final answer
x = 85,730.34
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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.