Home / 210,510,568.05-290,489,836.42-122,398,314.55

Finding the Fourth Proportional to 210,510,568.05, 290,489,836.42 and 122,398,314.55

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Solution

The fourth proportional to 210,510,568.05, 290,489,836.42 and 122,398,314.55 is: 168,901,099.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,510,568.05 : 290,489,836.42 = 122,398,314.55 : x
  2. Step 2: Convert to fraction form
    210,510,568.05/290,489,836.42 = 122,398,314.55/x
  3. Step 3: Cross multiply
    210,510,568.05x = 290,489,836.42 × 122,398,314.55
  4. Step 4: Simplify right side
    210,510,568.05x = 35,555,466,372,229,312
  5. Step 5: Solve for x
    x = 35,555,466,372,229,312/210,510,568.05
  6. Step 6: Final answer
    x = 168,901,099.37

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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.