Finding the Fourth Proportional to 222,481,148.58, 306,995,765.36 and 121,983,138.80
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Solution
The fourth proportional to 222,481,148.58, 306,995,765.36 and 121,983,138.80 is: 168,321,259.11
Step by Step Solution
- Step 1: Write the proportion equation
222,481,148.58 : 306,995,765.36 = 121,983,138.80 : x - Step 2: Convert to fraction form
222,481,148.58/306,995,765.36 = 121,983,138.80/x - Step 3: Cross multiply
222,481,148.58x = 306,995,765.36 × 121,983,138.80 - Step 4: Simplify right side
222,481,148.58x = 37,448,307,056,921,112 - Step 5: Solve for x
x = 37,448,307,056,921,112/222,481,148.58 - Step 6: Final answer
x = 168,321,259.11
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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.