Finding the Fourth Proportional to 261,631.70, 392,447.55 and 149,311.70
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Solution
The fourth proportional to 261,631.70, 392,447.55 and 149,311.70 is: 223,967.55
Step by Step Solution
- Step 1: Write the proportion equation
261,631.70 : 392,447.55 = 149,311.70 : x - Step 2: Convert to fraction form
261,631.70/392,447.55 = 149,311.70/x - Step 3: Cross multiply
261,631.70x = 392,447.55 × 149,311.70 - Step 4: Simplify right side
261,631.70x = 58,597,010,851.34 - Step 5: Solve for x
x = 58,597,010,851.34/261,631.70 - Step 6: Final answer
x = 223,967.55
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1.5x scale
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.