Finding the Fourth Proportional to 256,747.20, 385,120.80 and 106,937.70
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Solution
The fourth proportional to 256,747.20, 385,120.80 and 106,937.70 is: 160,406.55
Step by Step Solution
- Step 1: Write the proportion equation
256,747.20 : 385,120.80 = 106,937.70 : x - Step 2: Convert to fraction form
256,747.20/385,120.80 = 106,937.70/x - Step 3: Cross multiply
256,747.20x = 385,120.80 × 106,937.70 - Step 4: Simplify right side
256,747.20x = 41,183,932,574.16 - Step 5: Solve for x
x = 41,183,932,574.16/256,747.20 - Step 6: Final answer
x = 160,406.55
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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.