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Finding the Fourth Proportional to 409,003.02, 613,537.34 and 142,757.64

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Solution

The fourth proportional to 409,003.02, 613,537.34 and 142,757.64 is: 214,147.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,003.02 : 613,537.34 = 142,757.64 : x
  2. Step 2: Convert to fraction form
    409,003.02/613,537.34 = 142,757.64/x
  3. Step 3: Cross multiply
    409,003.02x = 613,537.34 × 142,757.64
  4. Step 4: Simplify right side
    409,003.02x = 87,587,141,996.49
  5. Step 5: Solve for x
    x = 87,587,141,996.49/409,003.02
  6. Step 6: Final answer
    x = 214,147.91

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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.