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Finding the Fourth Proportional to 647,493.40, 971,240.10 and 198,213.40

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Solution

The fourth proportional to 647,493.40, 971,240.10 and 198,213.40 is: 297,320.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,493.40 : 971,240.10 = 198,213.40 : x
  2. Step 2: Convert to fraction form
    647,493.40/971,240.10 = 198,213.40/x
  3. Step 3: Cross multiply
    647,493.40x = 971,240.10 × 198,213.40
  4. Step 4: Simplify right side
    647,493.40x = 192,512,802,437.34
  5. Step 5: Solve for x
    x = 192,512,802,437.34/647,493.40
  6. Step 6: Final answer
    x = 297,320.10

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