Finding the Fourth Proportional to 290,313,633.60, 434,462,680.80 and 266,127,163.20
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Solution
The fourth proportional to 290,313,633.60, 434,462,680.80 and 266,127,163.20 is: 398,266,934.02
Step by Step Solution
- Step 1: Write the proportion equation
290,313,633.60 : 434,462,680.80 = 266,127,163.20 : x - Step 2: Convert to fraction form
290,313,633.60/434,462,680.80 = 266,127,163.20/x - Step 3: Cross multiply
290,313,633.60x = 434,462,680.80 × 266,127,163.20 - Step 4: Simplify right side
290,313,633.60x = 115,622,320,757,571,104 - Step 5: Solve for x
x = 115,622,320,757,571,104/290,313,633.60 - Step 6: Final answer
x = 398,266,934.02
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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.