Finding the Fourth Proportional to 290,228,451.12, 400,515,262.56 and 159,848,259.12
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Solution
The fourth proportional to 290,228,451.12, 400,515,262.56 and 159,848,259.12 is: 220,590,597.59
Step by Step Solution
- Step 1: Write the proportion equation
290,228,451.12 : 400,515,262.56 = 159,848,259.12 : x - Step 2: Convert to fraction form
290,228,451.12/400,515,262.56 = 159,848,259.12/x - Step 3: Cross multiply
290,228,451.12x = 400,515,262.56 × 159,848,259.12 - Step 4: Simplify right side
290,228,451.12x = 64,021,667,471,205,720 - Step 5: Solve for x
x = 64,021,667,471,205,720/290,228,451.12 - Step 6: Final answer
x = 220,590,597.59
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1.5x scale
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.