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Finding the Fourth Proportional to 285,128.78, 393,495.98 and 164,267.87

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Solution

The fourth proportional to 285,128.78, 393,495.98 and 164,267.87 is: 226,700.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,128.78 : 393,495.98 = 164,267.87 : x
  2. Step 2: Convert to fraction form
    285,128.78/393,495.98 = 164,267.87/x
  3. Step 3: Cross multiply
    285,128.78x = 393,495.98 × 164,267.87
  4. Step 4: Simplify right side
    285,128.78x = 64,638,743,699.34
  5. Step 5: Solve for x
    x = 64,638,743,699.34/285,128.78
  6. Step 6: Final answer
    x = 226,700.18

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