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Finding the Fourth Proportional to 323,309.84, 484,515.32 and 281,103.44

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Solution

The fourth proportional to 323,309.84, 484,515.32 and 281,103.44 is: 421,264.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,309.84 : 484,515.32 = 281,103.44 : x
  2. Step 2: Convert to fraction form
    323,309.84/484,515.32 = 281,103.44/x
  3. Step 3: Cross multiply
    323,309.84x = 484,515.32 × 281,103.44
  4. Step 4: Simplify right side
    323,309.84x = 136,198,923,184.70
  5. Step 5: Solve for x
    x = 136,198,923,184.70/323,309.84
  6. Step 6: Final answer
    x = 421,264.39

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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.