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Finding the Fourth Proportional to 268,811.80, 402,828.90 and 118,929.40

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Solution

The fourth proportional to 268,811.80, 402,828.90 and 118,929.40 is: 178,222.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,811.80 : 402,828.90 = 118,929.40 : x
  2. Step 2: Convert to fraction form
    268,811.80/402,828.90 = 118,929.40/x
  3. Step 3: Cross multiply
    268,811.80x = 402,828.90 × 118,929.40
  4. Step 4: Simplify right side
    268,811.80x = 47,908,199,379.66
  5. Step 5: Solve for x
    x = 47,908,199,379.66/268,811.80
  6. Step 6: Final answer
    x = 178,222.08

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