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Finding the Fourth Proportional to 308,455.56, 425,666.16 and 172,489.77

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Solution

The fourth proportional to 308,455.56, 425,666.16 and 172,489.77 is: 238,034.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,455.56 : 425,666.16 = 172,489.77 : x
  2. Step 2: Convert to fraction form
    308,455.56/425,666.16 = 172,489.77/x
  3. Step 3: Cross multiply
    308,455.56x = 425,666.16 × 172,489.77
  4. Step 4: Simplify right side
    308,455.56x = 73,423,058,035.18
  5. Step 5: Solve for x
    x = 73,423,058,035.18/308,455.56
  6. Step 6: Final answer
    x = 238,034.48

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