Finding the Fourth Proportional to 396,228,980.75, 546,846,438.60 and 239,597,208.63
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Solution
The fourth proportional to 396,228,980.75, 546,846,438.60 and 239,597,208.63 is: 330,674,651.79
Step by Step Solution
- Step 1: Write the proportion equation
396,228,980.75 : 546,846,438.60 = 239,597,208.63 : x - Step 2: Convert to fraction form
396,228,980.75/546,846,438.60 = 239,597,208.63/x - Step 3: Cross multiply
396,228,980.75x = 546,846,438.60 × 239,597,208.63 - Step 4: Simplify right side
396,228,980.75x = 131,022,880,237,816,688 - Step 5: Solve for x
x = 131,022,880,237,816,688/396,228,980.75 - Step 6: Final answer
x = 330,674,651.79
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.