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Finding the Fourth Proportional to 378,593.21, 567,489.78 and 165,174.21

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Solution

The fourth proportional to 378,593.21, 567,489.78 and 165,174.21 is: 247,586.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,593.21 : 567,489.78 = 165,174.21 : x
  2. Step 2: Convert to fraction form
    378,593.21/567,489.78 = 165,174.21/x
  3. Step 3: Cross multiply
    378,593.21x = 567,489.78 × 165,174.21
  4. Step 4: Simplify right side
    378,593.21x = 93,734,676,094.57
  5. Step 5: Solve for x
    x = 93,734,676,094.57/378,593.21
  6. Step 6: Final answer
    x = 247,586.78

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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.