Finding the Fourth Proportional to 320,239.20, 479,840.40 and 201,698.40
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Solution
The fourth proportional to 320,239.20, 479,840.40 and 201,698.40 is: 302,221.09
Step by Step Solution
- Step 1: Write the proportion equation
320,239.20 : 479,840.40 = 201,698.40 : x - Step 2: Convert to fraction form
320,239.20/479,840.40 = 201,698.40/x - Step 3: Cross multiply
320,239.20x = 479,840.40 × 201,698.40 - Step 4: Simplify right side
320,239.20x = 96,783,040,935.36 - Step 5: Solve for x
x = 96,783,040,935.36/320,239.20 - Step 6: Final answer
x = 302,221.09
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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.