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Finding the Fourth Proportional to 210,506.58, 290,503.26 and 115,019.20

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Solution

The fourth proportional to 210,506.58, 290,503.26 and 115,019.20 is: 158,728.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,506.58 : 290,503.26 = 115,019.20 : x
  2. Step 2: Convert to fraction form
    210,506.58/290,503.26 = 115,019.20/x
  3. Step 3: Cross multiply
    210,506.58x = 290,503.26 × 115,019.20
  4. Step 4: Simplify right side
    210,506.58x = 33,413,452,562.59
  5. Step 5: Solve for x
    x = 33,413,452,562.59/210,506.58
  6. Step 6: Final answer
    x = 158,728.78

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