Finding the Fourth Proportional to 259,414.32, 389,239.70 and 133,143.23
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Solution
The fourth proportional to 259,414.32, 389,239.70 and 133,143.23 is: 199,775.52
Step by Step Solution
- Step 1: Write the proportion equation
259,414.32 : 389,239.70 = 133,143.23 : x - Step 2: Convert to fraction form
259,414.32/389,239.70 = 133,143.23/x - Step 3: Cross multiply
259,414.32x = 389,239.70 × 133,143.23 - Step 4: Simplify right side
259,414.32x = 51,824,630,902.23 - Step 5: Solve for x
x = 51,824,630,902.23/259,414.32 - Step 6: Final answer
x = 199,775.52
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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.