Finding the Fourth Proportional to 290,948,121.45, 436,422,182.18 and 259,380,526.05
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Solution
The fourth proportional to 290,948,121.45, 436,422,182.18 and 259,380,526.05 is: 389,070,789.08
Step by Step Solution
- Step 1: Write the proportion equation
290,948,121.45 : 436,422,182.18 = 259,380,526.05 : x - Step 2: Convert to fraction form
290,948,121.45/436,422,182.18 = 259,380,526.05/x - Step 3: Cross multiply
290,948,121.45x = 436,422,182.18 × 259,380,526.05 - Step 4: Simplify right side
290,948,121.45x = 113,199,415,192,440,448 - Step 5: Solve for x
x = 113,199,415,192,440,448/290,948,121.45 - Step 6: Final answer
x = 389,070,789.08
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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.