Finding the Fourth Proportional to 217,647.87, 300,354.06 and 122,154.57
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Solution
The fourth proportional to 217,647.87, 300,354.06 and 122,154.57 is: 168,573.31
Step by Step Solution
- Step 1: Write the proportion equation
217,647.87 : 300,354.06 = 122,154.57 : x - Step 2: Convert to fraction form
217,647.87/300,354.06 = 122,154.57/x - Step 3: Cross multiply
217,647.87x = 300,354.06 × 122,154.57 - Step 4: Simplify right side
217,647.87x = 36,689,621,047.05 - Step 5: Solve for x
x = 36,689,621,047.05/217,647.87 - Step 6: Final answer
x = 168,573.31
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.