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Finding the Fourth Proportional to 402,107.70, 555,033.20 and 258,867.75

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Solution

The fourth proportional to 402,107.70, 555,033.20 and 258,867.75 is: 357,317.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,107.70 : 555,033.20 = 258,867.75 : x
  2. Step 2: Convert to fraction form
    402,107.70/555,033.20 = 258,867.75/x
  3. Step 3: Cross multiply
    402,107.70x = 555,033.20 × 258,867.75
  4. Step 4: Simplify right side
    402,107.70x = 143,680,194,364.96
  5. Step 5: Solve for x
    x = 143,680,194,364.96/402,107.70
  6. Step 6: Final answer
    x = 357,317.69

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