Finding the Fourth Proportional to 213,996,396.81, 320,893,406.85 and 82,900,074.24
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Solution
The fourth proportional to 213,996,396.81, 320,893,406.85 and 82,900,074.24 is: 124,310,911.99
Step by Step Solution
- Step 1: Write the proportion equation
213,996,396.81 : 320,893,406.85 = 82,900,074.24 : x - Step 2: Convert to fraction form
213,996,396.81/320,893,406.85 = 82,900,074.24/x - Step 3: Cross multiply
213,996,396.81x = 320,893,406.85 × 82,900,074.24 - Step 4: Simplify right side
213,996,396.81x = 26,602,087,250,991,524 - Step 5: Solve for x
x = 26,602,087,250,991,524/213,996,396.81 - Step 6: Final answer
x = 124,310,911.99
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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.