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Finding the Fourth Proportional to 613,195.66, 919,797.59 and 213,834.88

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Solution

The fourth proportional to 613,195.66, 919,797.59 and 213,834.88 is: 320,753.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,195.66 : 919,797.59 = 213,834.88 : x
  2. Step 2: Convert to fraction form
    613,195.66/919,797.59 = 213,834.88/x
  3. Step 3: Cross multiply
    613,195.66x = 919,797.59 × 213,834.88
  4. Step 4: Simplify right side
    613,195.66x = 196,684,807,281.94
  5. Step 5: Solve for x
    x = 196,684,807,281.94/613,195.66
  6. Step 6: Final answer
    x = 320,753.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.