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Finding the Fourth Proportional to 378,147.75, 567,221.61 and 259,459.26

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Solution

The fourth proportional to 378,147.75, 567,221.61 and 259,459.26 is: 389,188.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,147.75 : 567,221.61 = 259,459.26 : x
  2. Step 2: Convert to fraction form
    378,147.75/567,221.61 = 259,459.26/x
  3. Step 3: Cross multiply
    378,147.75x = 567,221.61 × 259,459.26
  4. Step 4: Simplify right side
    378,147.75x = 147,170,899,186.61
  5. Step 5: Solve for x
    x = 147,170,899,186.61/378,147.75
  6. Step 6: Final answer
    x = 389,188.88

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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.