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Finding the Fourth Proportional to 321,304.40, 481,956.60 and 121,631.30

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Solution

The fourth proportional to 321,304.40, 481,956.60 and 121,631.30 is: 182,446.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,304.40 : 481,956.60 = 121,631.30 : x
  2. Step 2: Convert to fraction form
    321,304.40/481,956.60 = 121,631.30/x
  3. Step 3: Cross multiply
    321,304.40x = 481,956.60 × 121,631.30
  4. Step 4: Simplify right side
    321,304.40x = 58,621,007,801.58
  5. Step 5: Solve for x
    x = 58,621,007,801.58/321,304.40
  6. Step 6: Final answer
    x = 182,446.95

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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.