Finding the Fourth Proportional to 342,438.12, 513,646.92 and 132,121.44
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Solution
The fourth proportional to 342,438.12, 513,646.92 and 132,121.44 is: 198,178.20
Step by Step Solution
- Step 1: Write the proportion equation
342,438.12 : 513,646.92 = 132,121.44 : x - Step 2: Convert to fraction form
342,438.12/513,646.92 = 132,121.44/x - Step 3: Cross multiply
342,438.12x = 513,646.92 × 132,121.44 - Step 4: Simplify right side
342,438.12x = 67,863,770,721.96 - Step 5: Solve for x
x = 67,863,770,721.96/342,438.12 - Step 6: Final answer
x = 198,178.20
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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.