Finding the Fourth Proportional to 431,134.40, 646,798.80 and 131,628.80
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Solution
The fourth proportional to 431,134.40, 646,798.80 and 131,628.80 is: 197,472.88
Step by Step Solution
- Step 1: Write the proportion equation
431,134.40 : 646,798.80 = 131,628.80 : x - Step 2: Convert to fraction form
431,134.40/646,798.80 = 131,628.80/x - Step 3: Cross multiply
431,134.40x = 646,798.80 × 131,628.80 - Step 4: Simplify right side
431,134.40x = 85,137,349,885.44 - Step 5: Solve for x
x = 85,137,349,885.44/431,134.40 - Step 6: Final answer
x = 197,472.88
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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.