Finding the Fourth Proportional to 210,510,563.18, 290,489,829.69 and 122,398,309.68
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Solution
The fourth proportional to 210,510,563.18, 290,489,829.69 and 122,398,309.68 is: 168,901,092.64
Step by Step Solution
- Step 1: Write the proportion equation
210,510,563.18 : 290,489,829.69 = 122,398,309.68 : x - Step 2: Convert to fraction form
210,510,563.18/290,489,829.69 = 122,398,309.68/x - Step 3: Cross multiply
210,510,563.18x = 290,489,829.69 × 122,398,309.68 - Step 4: Simplify right side
210,510,563.18x = 35,555,464,132,656,736 - Step 5: Solve for x
x = 35,555,464,132,656,736/210,510,563.18 - Step 6: Final answer
x = 168,901,092.64
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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.