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Finding the Fourth Proportional to 276,867.90, 415,398.21 and 87,357.51

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Solution

The fourth proportional to 276,867.90, 415,398.21 and 87,357.51 is: 131,066.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,867.90 : 415,398.21 = 87,357.51 : x
  2. Step 2: Convert to fraction form
    276,867.90/415,398.21 = 87,357.51/x
  3. Step 3: Cross multiply
    276,867.90x = 415,398.21 × 87,357.51
  4. Step 4: Simplify right side
    276,867.90x = 36,288,153,284.06
  5. Step 5: Solve for x
    x = 36,288,153,284.06/276,867.90
  6. Step 6: Final answer
    x = 131,066.67

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