Finding the Fourth Proportional to 313,027.20, 431,977.68 and 169,786.72
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Solution
The fourth proportional to 313,027.20, 431,977.68 and 169,786.72 is: 234,305.75
Step by Step Solution
- Step 1: Write the proportion equation
313,027.20 : 431,977.68 = 169,786.72 : x - Step 2: Convert to fraction form
313,027.20/431,977.68 = 169,786.72/x - Step 3: Cross multiply
313,027.20x = 431,977.68 × 169,786.72 - Step 4: Simplify right side
313,027.20x = 73,344,073,400.41 - Step 5: Solve for x
x = 73,344,073,400.41/313,027.20 - Step 6: Final answer
x = 234,305.75
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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.