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Finding the Fourth Proportional to 484,448.40, 726,154.20 and 218,163.60

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Solution

The fourth proportional to 484,448.40, 726,154.20 and 218,163.60 is: 327,011.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,448.40 : 726,154.20 = 218,163.60 : x
  2. Step 2: Convert to fraction form
    484,448.40/726,154.20 = 218,163.60/x
  3. Step 3: Cross multiply
    484,448.40x = 726,154.20 × 218,163.60
  4. Step 4: Simplify right side
    484,448.40x = 158,420,414,427.12
  5. Step 5: Solve for x
    x = 158,420,414,427.12/484,448.40
  6. Step 6: Final answer
    x = 327,011.95

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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.