Finding the Fourth Proportional to 274,084,617.21, 378,252,769.12 and 155,017,765.21
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Solution
The fourth proportional to 274,084,617.21, 378,252,769.12 and 155,017,765.21 is: 213,933,563.85
Step by Step Solution
- Step 1: Write the proportion equation
274,084,617.21 : 378,252,769.12 = 155,017,765.21 : x - Step 2: Convert to fraction form
274,084,617.21/378,252,769.12 = 155,017,765.21/x - Step 3: Cross multiply
274,084,617.21x = 378,252,769.12 × 155,017,765.21 - Step 4: Simplify right side
274,084,617.21x = 58,635,898,954,786,296 - Step 5: Solve for x
x = 58,635,898,954,786,296/274,084,617.21 - Step 6: Final answer
x = 213,933,563.85
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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.