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Finding the Fourth Proportional to 230,518.88, 318,121.70 and 128,543.36

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Solution

The fourth proportional to 230,518.88, 318,121.70 and 128,543.36 is: 177,392.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,518.88 : 318,121.70 = 128,543.36 : x
  2. Step 2: Convert to fraction form
    230,518.88/318,121.70 = 128,543.36/x
  3. Step 3: Cross multiply
    230,518.88x = 318,121.70 × 128,543.36
  4. Step 4: Simplify right side
    230,518.88x = 40,892,429,973.59
  5. Step 5: Solve for x
    x = 40,892,429,973.59/230,518.88
  6. Step 6: Final answer
    x = 177,392.98

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