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Finding the Fourth Proportional to 317,837.40, 476,318.70 and 210,917.40

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Solution

The fourth proportional to 317,837.40, 476,318.70 and 210,917.40 is: 316,085.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,837.40 : 476,318.70 = 210,917.40 : x
  2. Step 2: Convert to fraction form
    317,837.40/476,318.70 = 210,917.40/x
  3. Step 3: Cross multiply
    317,837.40x = 476,318.70 × 210,917.40
  4. Step 4: Simplify right side
    317,837.40x = 100,463,901,775.38
  5. Step 5: Solve for x
    x = 100,463,901,775.38/317,837.40
  6. Step 6: Final answer
    x = 316,085.84

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