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Finding the Fourth Proportional to 445,532.40, 668,233.80 and 129,956.40

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Solution

The fourth proportional to 445,532.40, 668,233.80 and 129,956.40 is: 194,915.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,532.40 : 668,233.80 = 129,956.40 : x
  2. Step 2: Convert to fraction form
    445,532.40/668,233.80 = 129,956.40/x
  3. Step 3: Cross multiply
    445,532.40x = 668,233.80 × 129,956.40
  4. Step 4: Simplify right side
    445,532.40x = 86,841,259,006.32
  5. Step 5: Solve for x
    x = 86,841,259,006.32/445,532.40
  6. Step 6: Final answer
    x = 194,915.70

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