Home / 210,510,614.94-290,489,901.12-122,398,361.46

Finding the Fourth Proportional to 210,510,614.94, 290,489,901.12 and 122,398,361.46

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Solution

The fourth proportional to 210,510,614.94, 290,489,901.12 and 122,398,361.46 is: 168,901,164.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,510,614.94 : 290,489,901.12 = 122,398,361.46 : x
  2. Step 2: Convert to fraction form
    210,510,614.94/290,489,901.12 = 122,398,361.46/x
  3. Step 3: Cross multiply
    210,510,614.94x = 290,489,901.12 × 122,398,361.46
  4. Step 4: Simplify right side
    210,510,614.94x = 35,555,487,917,765,416
  5. Step 5: Solve for x
    x = 35,555,487,917,765,416/210,510,614.94
  6. Step 6: Final answer
    x = 168,901,164.10

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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.