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Finding the Fourth Proportional to 323,885.34, 446,730.39 and 280,787.79

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Solution

The fourth proportional to 323,885.34, 446,730.39 and 280,787.79 is: 387,286.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,885.34 : 446,730.39 = 280,787.79 : x
  2. Step 2: Convert to fraction form
    323,885.34/446,730.39 = 280,787.79/x
  3. Step 3: Cross multiply
    323,885.34x = 446,730.39 × 280,787.79
  4. Step 4: Simplify right side
    323,885.34x = 125,436,438,933.94
  5. Step 5: Solve for x
    x = 125,436,438,933.94/323,885.34
  6. Step 6: Final answer
    x = 387,286.56

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1.5x scale

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.