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Finding the Fourth Proportional to 216,722.52, 299,060.78 and 121,210.76

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Solution

The fourth proportional to 216,722.52, 299,060.78 and 121,210.76 is: 167,261.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,722.52 : 299,060.78 = 121,210.76 : x
  2. Step 2: Convert to fraction form
    216,722.52/299,060.78 = 121,210.76/x
  3. Step 3: Cross multiply
    216,722.52x = 299,060.78 × 121,210.76
  4. Step 4: Simplify right side
    216,722.52x = 36,249,384,571.59
  5. Step 5: Solve for x
    x = 36,249,384,571.59/216,722.52
  6. Step 6: Final answer
    x = 167,261.73

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