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Finding the Fourth Proportional to 439,568.67, 659,405.61 and 155,200.76

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Solution

The fourth proportional to 439,568.67, 659,405.61 and 155,200.76 is: 232,819.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,568.67 : 659,405.61 = 155,200.76 : x
  2. Step 2: Convert to fraction form
    439,568.67/659,405.61 = 155,200.76/x
  3. Step 3: Cross multiply
    439,568.67x = 659,405.61 × 155,200.76
  4. Step 4: Simplify right side
    439,568.67x = 102,340,250,996.01
  5. Step 5: Solve for x
    x = 102,340,250,996.01/439,568.67
  6. Step 6: Final answer
    x = 232,819.71

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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.