Finding the Fourth Proportional to 385,209.87, 531,604.14 and 210,791.79
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Solution
The fourth proportional to 385,209.87, 531,604.14 and 210,791.79 is: 290,900.62
Step by Step Solution
- Step 1: Write the proportion equation
385,209.87 : 531,604.14 = 210,791.79 : x - Step 2: Convert to fraction form
385,209.87/531,604.14 = 210,791.79/x - Step 3: Cross multiply
385,209.87x = 531,604.14 × 210,791.79 - Step 4: Simplify right side
385,209.87x = 112,057,788,242.01 - Step 5: Solve for x
x = 112,057,788,242.01/385,209.87 - Step 6: Final answer
x = 290,900.62
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1.5x scale
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.