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Finding the Fourth Proportional to 378,172.75, 567,259.14 and 141,626.83

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Solution

The fourth proportional to 378,172.75, 567,259.14 and 141,626.83 is: 212,440.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,172.75 : 567,259.14 = 141,626.83 : x
  2. Step 2: Convert to fraction form
    378,172.75/567,259.14 = 141,626.83/x
  3. Step 3: Cross multiply
    378,172.75x = 567,259.14 × 141,626.83
  4. Step 4: Simplify right side
    378,172.75x = 80,339,113,786.73
  5. Step 5: Solve for x
    x = 80,339,113,786.73/378,172.75
  6. Step 6: Final answer
    x = 212,440.25

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1.5x scale

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.