Finding the Fourth Proportional to 612,769.49, 919,178.96 and 213,450.65
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Solution
The fourth proportional to 612,769.49, 919,178.96 and 213,450.65 is: 320,184.58
Step by Step Solution
- Step 1: Write the proportion equation
612,769.49 : 919,178.96 = 213,450.65 : x - Step 2: Convert to fraction form
612,769.49/919,178.96 = 213,450.65/x - Step 3: Cross multiply
612,769.49x = 919,178.96 × 213,450.65 - Step 4: Simplify right side
612,769.49x = 196,199,340,815.18 - Step 5: Solve for x
x = 196,199,340,815.18/612,769.49 - Step 6: Final answer
x = 320,184.58
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1.5x scale
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.