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Finding the Fourth Proportional to 210,980.38, 316,357.08 and 84,557.20

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Solution

The fourth proportional to 210,980.38, 316,357.08 and 84,557.20 is: 126,790.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,980.38 : 316,357.08 = 84,557.20 : x
  2. Step 2: Convert to fraction form
    210,980.38/316,357.08 = 84,557.20/x
  3. Step 3: Cross multiply
    210,980.38x = 316,357.08 × 84,557.20
  4. Step 4: Simplify right side
    210,980.38x = 26,750,268,884.98
  5. Step 5: Solve for x
    x = 26,750,268,884.98/210,980.38
  6. Step 6: Final answer
    x = 126,790.32

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