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Finding the Fourth Proportional to 257,663.36, 386,508.08 and 70,676.48

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Solution

The fourth proportional to 257,663.36, 386,508.08 and 70,676.48 is: 106,018.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,663.36 : 386,508.08 = 70,676.48 : x
  2. Step 2: Convert to fraction form
    257,663.36/386,508.08 = 70,676.48/x
  3. Step 3: Cross multiply
    257,663.36x = 386,508.08 × 70,676.48
  4. Step 4: Simplify right side
    257,663.36x = 27,317,030,585.96
  5. Step 5: Solve for x
    x = 27,317,030,585.96/257,663.36
  6. Step 6: Final answer
    x = 106,018.30

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