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Finding the Fourth Proportional to 576,533.40, 864,540.90 and 221,429.40

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Solution

The fourth proportional to 576,533.40, 864,540.90 and 221,429.40 is: 332,044.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,533.40 : 864,540.90 = 221,429.40 : x
  2. Step 2: Convert to fraction form
    576,533.40/864,540.90 = 221,429.40/x
  3. Step 3: Cross multiply
    576,533.40x = 864,540.90 × 221,429.40
  4. Step 4: Simplify right side
    576,533.40x = 191,434,772,762.46
  5. Step 5: Solve for x
    x = 191,434,772,762.46/576,533.40
  6. Step 6: Final answer
    x = 332,044.55

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