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Finding the Fourth Proportional to 484,321.39, 668,288.02 and 280,332.41

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Solution

The fourth proportional to 484,321.39, 668,288.02 and 280,332.41 is: 386,815.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,321.39 : 668,288.02 = 280,332.41 : x
  2. Step 2: Convert to fraction form
    484,321.39/668,288.02 = 280,332.41/x
  3. Step 3: Cross multiply
    484,321.39x = 668,288.02 × 280,332.41
  4. Step 4: Simplify right side
    484,321.39x = 187,342,791,220.73
  5. Step 5: Solve for x
    x = 187,342,791,220.73/484,321.39
  6. Step 6: Final answer
    x = 386,815.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.