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Finding the Fourth Proportional to 425,469.36, 587,147.64 and 255,703.50

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Solution

The fourth proportional to 425,469.36, 587,147.64 and 255,703.50 is: 352,870.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,469.36 : 587,147.64 = 255,703.50 : x
  2. Step 2: Convert to fraction form
    425,469.36/587,147.64 = 255,703.50/x
  3. Step 3: Cross multiply
    425,469.36x = 587,147.64 × 255,703.50
  4. Step 4: Simplify right side
    425,469.36x = 150,135,706,564.74
  5. Step 5: Solve for x
    x = 150,135,706,564.74/425,469.36
  6. Step 6: Final answer
    x = 352,870.78

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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.