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Finding the Fourth Proportional to 251,867.70, 377,801.55 and 85,655.70

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Solution

The fourth proportional to 251,867.70, 377,801.55 and 85,655.70 is: 128,483.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,867.70 : 377,801.55 = 85,655.70 : x
  2. Step 2: Convert to fraction form
    251,867.70/377,801.55 = 85,655.70/x
  3. Step 3: Cross multiply
    251,867.70x = 377,801.55 × 85,655.70
  4. Step 4: Simplify right side
    251,867.70x = 32,360,856,226.34
  5. Step 5: Solve for x
    x = 32,360,856,226.34/251,867.70
  6. Step 6: Final answer
    x = 128,483.55

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