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Finding the Fourth Proportional to 291,297.90, 436,946.85 and 172,908.30

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Solution

The fourth proportional to 291,297.90, 436,946.85 and 172,908.30 is: 259,362.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,297.90 : 436,946.85 = 172,908.30 : x
  2. Step 2: Convert to fraction form
    291,297.90/436,946.85 = 172,908.30/x
  3. Step 3: Cross multiply
    291,297.90x = 436,946.85 × 172,908.30
  4. Step 4: Simplify right side
    291,297.90x = 75,551,737,023.86
  5. Step 5: Solve for x
    x = 75,551,737,023.86/291,297.90
  6. Step 6: Final answer
    x = 259,362.45

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