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Finding the Fourth Proportional to 266,117.80, 399,176.70 and 255,620.20

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Solution

The fourth proportional to 266,117.80, 399,176.70 and 255,620.20 is: 383,430.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,117.80 : 399,176.70 = 255,620.20 : x
  2. Step 2: Convert to fraction form
    266,117.80/399,176.70 = 255,620.20/x
  3. Step 3: Cross multiply
    266,117.80x = 399,176.70 × 255,620.20
  4. Step 4: Simplify right side
    266,117.80x = 102,037,627,889.34
  5. Step 5: Solve for x
    x = 102,037,627,889.34/266,117.80
  6. Step 6: Final answer
    x = 383,430.30

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