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Finding the Fourth Proportional to 396,911.34, 595,241.46 and 130,612.50

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Solution

The fourth proportional to 396,911.34, 595,241.46 and 130,612.50 is: 195,877.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,911.34 : 595,241.46 = 130,612.50 : x
  2. Step 2: Convert to fraction form
    396,911.34/595,241.46 = 130,612.50/x
  3. Step 3: Cross multiply
    396,911.34x = 595,241.46 × 130,612.50
  4. Step 4: Simplify right side
    396,911.34x = 77,745,975,194.25
  5. Step 5: Solve for x
    x = 77,745,975,194.25/396,911.34
  6. Step 6: Final answer
    x = 195,877.43

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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.