Finding the Fourth Proportional to 210,510,568.68, 290,489,837.28 and 122,398,315.18
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Solution
The fourth proportional to 210,510,568.68, 290,489,837.28 and 122,398,315.18 is: 168,901,100.23
Step by Step Solution
- Step 1: Write the proportion equation
210,510,568.68 : 290,489,837.28 = 122,398,315.18 : x - Step 2: Convert to fraction form
210,510,568.68/290,489,837.28 = 122,398,315.18/x - Step 3: Cross multiply
210,510,568.68x = 290,489,837.28 × 122,398,315.18 - Step 4: Simplify right side
210,510,568.68x = 35,555,466,659,984,352 - Step 5: Solve for x
x = 35,555,466,659,984,352/210,510,568.68 - Step 6: Final answer
x = 168,901,100.23
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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.