Finding the Fourth Proportional to 207,919,178.60, 311,542,844.70 and 131,104,740.20
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Solution
The fourth proportional to 207,919,178.60, 311,542,844.70 and 131,104,740.20 is: 196,445,291.82
Step by Step Solution
- Step 1: Write the proportion equation
207,919,178.60 : 311,542,844.70 = 131,104,740.20 : x - Step 2: Convert to fraction form
207,919,178.60/311,542,844.70 = 131,104,740.20/x - Step 3: Cross multiply
207,919,178.60x = 311,542,844.70 × 131,104,740.20 - Step 4: Simplify right side
207,919,178.60x = 40,844,743,715,562,448 - Step 5: Solve for x
x = 40,844,743,715,562,448/207,919,178.60 - Step 6: Final answer
x = 196,445,291.82
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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.