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Finding the Fourth Proportional to 398,254.88, 549,612.24 and 219,406.88

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Solution

The fourth proportional to 398,254.88, 549,612.24 and 219,406.88 is: 302,792.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,254.88 : 549,612.24 = 219,406.88 : x
  2. Step 2: Convert to fraction form
    398,254.88/549,612.24 = 219,406.88/x
  3. Step 3: Cross multiply
    398,254.88x = 549,612.24 × 219,406.88
  4. Step 4: Simplify right side
    398,254.88x = 120,588,706,788.21
  5. Step 5: Solve for x
    x = 120,588,706,788.21/398,254.88
  6. Step 6: Final answer
    x = 302,792.79

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