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Finding the Fourth Proportional to 272,624.60, 408,936.90 and 75,632.60

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Solution

The fourth proportional to 272,624.60, 408,936.90 and 75,632.60 is: 113,448.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,624.60 : 408,936.90 = 75,632.60 : x
  2. Step 2: Convert to fraction form
    272,624.60/408,936.90 = 75,632.60/x
  3. Step 3: Cross multiply
    272,624.60x = 408,936.90 × 75,632.60
  4. Step 4: Simplify right side
    272,624.60x = 30,928,960,982.94
  5. Step 5: Solve for x
    x = 30,928,960,982.94/272,624.60
  6. Step 6: Final answer
    x = 113,448.90

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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.