Finding the Fourth Proportional to 431,351.80, 647,027.70 and 115,840.60
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Solution
The fourth proportional to 431,351.80, 647,027.70 and 115,840.60 is: 173,760.90
Step by Step Solution
- Step 1: Write the proportion equation
431,351.80 : 647,027.70 = 115,840.60 : x - Step 2: Convert to fraction form
431,351.80/647,027.70 = 115,840.60/x - Step 3: Cross multiply
431,351.80x = 647,027.70 × 115,840.60 - Step 4: Simplify right side
431,351.80x = 74,952,076,984.62 - Step 5: Solve for x
x = 74,952,076,984.62/431,351.80 - Step 6: Final answer
x = 173,760.90
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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.