Home / 210,510,609.92-290,489,894.24-122,398,356.48

Finding the Fourth Proportional to 210,510,609.92, 290,489,894.24 and 122,398,356.48

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Solution

The fourth proportional to 210,510,609.92, 290,489,894.24 and 122,398,356.48 is: 168,901,157.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,510,609.92 : 290,489,894.24 = 122,398,356.48 : x
  2. Step 2: Convert to fraction form
    210,510,609.92/290,489,894.24 = 122,398,356.48/x
  3. Step 3: Cross multiply
    210,510,609.92x = 290,489,894.24 × 122,398,356.48
  4. Step 4: Simplify right side
    210,510,609.92x = 35,555,485,629,025,020
  5. Step 5: Solve for x
    x = 35,555,485,629,025,020/210,510,609.92
  6. Step 6: Final answer
    x = 168,901,157.25

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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.