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Finding the Fourth Proportional to 396,987.96, 595,564.02 and 130,764.72

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Solution

The fourth proportional to 396,987.96, 595,564.02 and 130,764.72 is: 196,174.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,987.96 : 595,564.02 = 130,764.72 : x
  2. Step 2: Convert to fraction form
    396,987.96/595,564.02 = 130,764.72/x
  3. Step 3: Cross multiply
    396,987.96x = 595,564.02 × 130,764.72
  4. Step 4: Simplify right side
    396,987.96x = 77,878,762,317.37
  5. Step 5: Solve for x
    x = 77,878,762,317.37/396,987.96
  6. Step 6: Final answer
    x = 196,174.12

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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.