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Finding the Fourth Proportional to 378,073.80, 567,110.70 and 111,813.60

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Solution

The fourth proportional to 378,073.80, 567,110.70 and 111,813.60 is: 167,720.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,073.80 : 567,110.70 = 111,813.60 : x
  2. Step 2: Convert to fraction form
    378,073.80/567,110.70 = 111,813.60/x
  3. Step 3: Cross multiply
    378,073.80x = 567,110.70 × 111,813.60
  4. Step 4: Simplify right side
    378,073.80x = 63,410,686,129.97
  5. Step 5: Solve for x
    x = 63,410,686,129.97/378,073.80
  6. Step 6: Final answer
    x = 167,720.39

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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.