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Finding the Fourth Proportional to 519,671.56, 717,149.16 and 281,207.56

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Solution

The fourth proportional to 519,671.56, 717,149.16 and 281,207.56 is: 388,067.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,671.56 : 717,149.16 = 281,207.56 : x
  2. Step 2: Convert to fraction form
    519,671.56/717,149.16 = 281,207.56/x
  3. Step 3: Cross multiply
    519,671.56x = 717,149.16 × 281,207.56
  4. Step 4: Simplify right side
    519,671.56x = 201,667,765,439.65
  5. Step 5: Solve for x
    x = 201,667,765,439.65/519,671.56
  6. Step 6: Final answer
    x = 388,067.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.