Finding the Fourth Proportional to 640,107.36, 959,949.96 and 213,525.63
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Solution
The fourth proportional to 640,107.36, 959,949.96 and 213,525.63 is: 320,218.03
Step by Step Solution
- Step 1: Write the proportion equation
640,107.36 : 959,949.96 = 213,525.63 : x - Step 2: Convert to fraction form
640,107.36/959,949.96 = 213,525.63/x - Step 3: Cross multiply
640,107.36x = 959,949.96 × 213,525.63 - Step 4: Simplify right side
640,107.36x = 204,973,919,977.48 - Step 5: Solve for x
x = 204,973,919,977.48/640,107.36 - Step 6: Final answer
x = 320,218.03
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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.