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Finding the Fourth Proportional to 384,561.60, 576,064.80 and 218,155.20

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Solution

The fourth proportional to 384,561.60, 576,064.80 and 218,155.20 is: 326,791.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,561.60 : 576,064.80 = 218,155.20 : x
  2. Step 2: Convert to fraction form
    384,561.60/576,064.80 = 218,155.20/x
  3. Step 3: Cross multiply
    384,561.60x = 576,064.80 × 218,155.20
  4. Step 4: Simplify right side
    384,561.60x = 125,671,531,656.96
  5. Step 5: Solve for x
    x = 125,671,531,656.96/384,561.60
  6. Step 6: Final answer
    x = 326,791.68

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