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Finding the Fourth Proportional to 309,648.52, 427,319.94 and 173,712.70

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Solution

The fourth proportional to 309,648.52, 427,319.94 and 173,712.70 is: 239,726.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,648.52 : 427,319.94 = 173,712.70 : x
  2. Step 2: Convert to fraction form
    309,648.52/427,319.94 = 173,712.70/x
  3. Step 3: Cross multiply
    309,648.52x = 427,319.94 × 173,712.70
  4. Step 4: Simplify right side
    309,648.52x = 74,230,900,541.24
  5. Step 5: Solve for x
    x = 74,230,900,541.24/309,648.52
  6. Step 6: Final answer
    x = 239,726.32

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