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Finding the Fourth Proportional to 387,107, 580,660.50 and 106,624.28

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Solution

The fourth proportional to 387,107, 580,660.50 and 106,624.28 is: 159,936.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,107 : 580,660.50 = 106,624.28 : x
  2. Step 2: Convert to fraction form
    387,107/580,660.50 = 106,624.28/x
  3. Step 3: Cross multiply
    387,107x = 580,660.50 × 106,624.28
  4. Step 4: Simplify right side
    387,107x = 61,912,507,736.94
  5. Step 5: Solve for x
    x = 61,912,507,736.94/387,107
  6. Step 6: Final answer
    x = 159,936.42

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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.