Finding the Fourth Proportional to 314,930,804.20, 472,396,206.30 and 142,413,245.80
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Solution
The fourth proportional to 314,930,804.20, 472,396,206.30 and 142,413,245.80 is: 213,619,868.70
Step by Step Solution
- Step 1: Write the proportion equation
314,930,804.20 : 472,396,206.30 = 142,413,245.80 : x - Step 2: Convert to fraction form
314,930,804.20/472,396,206.30 = 142,413,245.80/x - Step 3: Cross multiply
314,930,804.20x = 472,396,206.30 × 142,413,245.80 - Step 4: Simplify right side
314,930,804.20x = 67,275,477,042,789,416 - Step 5: Solve for x
x = 67,275,477,042,789,416/314,930,804.20 - Step 6: Final answer
x = 213,619,868.70
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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.