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Finding the Fourth Proportional to 321,398.60, 481,622.72 and 303,425.60

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Solution

The fourth proportional to 321,398.60, 481,622.72 and 303,425.60 is: 454,689.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,398.60 : 481,622.72 = 303,425.60 : x
  2. Step 2: Convert to fraction form
    321,398.60/481,622.72 = 303,425.60/x
  3. Step 3: Cross multiply
    321,398.60x = 481,622.72 × 303,425.60
  4. Step 4: Simplify right side
    321,398.60x = 146,136,662,789.63
  5. Step 5: Solve for x
    x = 146,136,662,789.63/321,398.60
  6. Step 6: Final answer
    x = 454,689.79

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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.