Finding the Fourth Proportional to 431,378.60, 646,952.70 and 131,858.60
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Solution
The fourth proportional to 431,378.60, 646,952.70 and 131,858.60 is: 197,752.69
Step by Step Solution
- Step 1: Write the proportion equation
431,378.60 : 646,952.70 = 131,858.60 : x - Step 2: Convert to fraction form
431,378.60/646,952.70 = 131,858.60/x - Step 3: Cross multiply
431,378.60x = 646,952.70 × 131,858.60 - Step 4: Simplify right side
431,378.60x = 85,306,277,288.22 - Step 5: Solve for x
x = 85,306,277,288.22/431,378.60 - Step 6: Final answer
x = 197,752.69
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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.