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Finding the Fourth Proportional to 439,574.56, 659,189.31 and 155,204.44

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Solution

The fourth proportional to 439,574.56, 659,189.31 and 155,204.44 is: 232,745.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,574.56 : 659,189.31 = 155,204.44 : x
  2. Step 2: Convert to fraction form
    439,574.56/659,189.31 = 155,204.44/x
  3. Step 3: Cross multiply
    439,574.56x = 659,189.31 × 155,204.44
  4. Step 4: Simplify right side
    439,574.56x = 102,309,107,712.54
  5. Step 5: Solve for x
    x = 102,309,107,712.54/439,574.56
  6. Step 6: Final answer
    x = 232,745.74

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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.