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Finding the Fourth Proportional to 379,781.67, 569,147.09 and 323,327.91

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Solution

The fourth proportional to 379,781.67, 569,147.09 and 323,327.91 is: 484,544.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,781.67 : 569,147.09 = 323,327.91 : x
  2. Step 2: Convert to fraction form
    379,781.67/569,147.09 = 323,327.91/x
  3. Step 3: Cross multiply
    379,781.67x = 569,147.09 × 323,327.91
  4. Step 4: Simplify right side
    379,781.67x = 184,021,137,475.64
  5. Step 5: Solve for x
    x = 184,021,137,475.64/379,781.67
  6. Step 6: Final answer
    x = 484,544.55

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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.