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Finding the Fourth Proportional to 425,321.34, 637,982.01 and 125,778.59

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Solution

The fourth proportional to 425,321.34, 637,982.01 and 125,778.59 is: 188,667.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,321.34 : 637,982.01 = 125,778.59 : x
  2. Step 2: Convert to fraction form
    425,321.34/637,982.01 = 125,778.59/x
  3. Step 3: Cross multiply
    425,321.34x = 637,982.01 × 125,778.59
  4. Step 4: Simplify right side
    425,321.34x = 80,244,474,473.26
  5. Step 5: Solve for x
    x = 80,244,474,473.26/425,321.34
  6. Step 6: Final answer
    x = 188,667.88

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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.