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Finding the Fourth Proportional to 230,758.40, 318,462.58 and 128,803.70

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Solution

The fourth proportional to 230,758.40, 318,462.58 and 128,803.70 is: 177,758.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,758.40 : 318,462.58 = 128,803.70 : x
  2. Step 2: Convert to fraction form
    230,758.40/318,462.58 = 128,803.70/x
  3. Step 3: Cross multiply
    230,758.40x = 318,462.58 × 128,803.70
  4. Step 4: Simplify right side
    230,758.40x = 41,019,158,615.55
  5. Step 5: Solve for x
    x = 41,019,158,615.55/230,758.40
  6. Step 6: Final answer
    x = 177,758.03

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