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Finding the Fourth Proportional to 266,133.80, 399,200.70 and 255,636.20

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Solution

The fourth proportional to 266,133.80, 399,200.70 and 255,636.20 is: 383,454.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,133.80 : 399,200.70 = 255,636.20 : x
  2. Step 2: Convert to fraction form
    266,133.80/399,200.70 = 255,636.20/x
  3. Step 3: Cross multiply
    266,133.80x = 399,200.70 × 255,636.20
  4. Step 4: Simplify right side
    266,133.80x = 102,050,149,985.34
  5. Step 5: Solve for x
    x = 102,050,149,985.34/266,133.80
  6. Step 6: Final answer
    x = 383,454.30

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