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Finding the Fourth Proportional to 306,715.84, 423,170.16 and 172,553.92

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Solution

The fourth proportional to 306,715.84, 423,170.16 and 172,553.92 is: 238,069.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,715.84 : 423,170.16 = 172,553.92 : x
  2. Step 2: Convert to fraction form
    306,715.84/423,170.16 = 172,553.92/x
  3. Step 3: Cross multiply
    306,715.84x = 423,170.16 × 172,553.92
  4. Step 4: Simplify right side
    306,715.84x = 73,019,669,935.03
  5. Step 5: Solve for x
    x = 73,019,669,935.03/306,715.84
  6. Step 6: Final answer
    x = 238,069.45

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