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Finding the Fourth Proportional to 280,197.18, 420,291.84 and 130,353.66

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Solution

The fourth proportional to 280,197.18, 420,291.84 and 130,353.66 is: 195,528.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,197.18 : 420,291.84 = 130,353.66 : x
  2. Step 2: Convert to fraction form
    280,197.18/420,291.84 = 130,353.66/x
  3. Step 3: Cross multiply
    280,197.18x = 420,291.84 × 130,353.66
  4. Step 4: Simplify right side
    280,197.18x = 54,786,579,612.13
  5. Step 5: Solve for x
    x = 54,786,579,612.13/280,197.18
  6. Step 6: Final answer
    x = 195,528.66

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