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Finding the Fourth Proportional to 257,645.06, 386,461.77 and 89,155.22

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Solution

The fourth proportional to 257,645.06, 386,461.77 and 89,155.22 is: 133,730.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,645.06 : 386,461.77 = 89,155.22 : x
  2. Step 2: Convert to fraction form
    257,645.06/386,461.77 = 89,155.22/x
  3. Step 3: Cross multiply
    257,645.06x = 386,461.77 × 89,155.22
  4. Step 4: Simplify right side
    257,645.06x = 34,455,082,973.85
  5. Step 5: Solve for x
    x = 34,455,082,973.85/257,645.06
  6. Step 6: Final answer
    x = 133,730.81

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