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Finding the Fourth Proportional to 257,609.72, 385,914.20 and 144,946.40

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Solution

The fourth proportional to 257,609.72, 385,914.20 and 144,946.40 is: 217,138.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,609.72 : 385,914.20 = 144,946.40 : x
  2. Step 2: Convert to fraction form
    257,609.72/385,914.20 = 144,946.40/x
  3. Step 3: Cross multiply
    257,609.72x = 385,914.20 × 144,946.40
  4. Step 4: Simplify right side
    257,609.72x = 55,936,873,998.88
  5. Step 5: Solve for x
    x = 55,936,873,998.88/257,609.72
  6. Step 6: Final answer
    x = 217,138.06

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