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Finding the Fourth Proportional to 396,323.60, 594,485.40 and 130,019.90

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Solution

The fourth proportional to 396,323.60, 594,485.40 and 130,019.90 is: 195,029.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,323.60 : 594,485.40 = 130,019.90 : x
  2. Step 2: Convert to fraction form
    396,323.60/594,485.40 = 130,019.90/x
  3. Step 3: Cross multiply
    396,323.60x = 594,485.40 × 130,019.90
  4. Step 4: Simplify right side
    396,323.60x = 77,294,932,259.46
  5. Step 5: Solve for x
    x = 77,294,932,259.46/396,323.60
  6. Step 6: Final answer
    x = 195,029.85

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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.