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Finding the Fourth Proportional to 396,624, 547,370.40 and 245,750.40

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Solution

The fourth proportional to 396,624, 547,370.40 and 245,750.40 is: 339,153.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,624 : 547,370.40 = 245,750.40 : x
  2. Step 2: Convert to fraction form
    396,624/547,370.40 = 245,750.40/x
  3. Step 3: Cross multiply
    396,624x = 547,370.40 × 245,750.40
  4. Step 4: Simplify right side
    396,624x = 134,516,494,748.16
  5. Step 5: Solve for x
    x = 134,516,494,748.16/396,624
  6. Step 6: Final answer
    x = 339,153.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.