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Finding the Fourth Proportional to 396,348.42, 594,269.76 and 261,256.53

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Solution

The fourth proportional to 396,348.42, 594,269.76 and 261,256.53 is: 391,718.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,348.42 : 594,269.76 = 261,256.53 : x
  2. Step 2: Convert to fraction form
    396,348.42/594,269.76 = 261,256.53/x
  3. Step 3: Cross multiply
    396,348.42x = 594,269.76 × 261,256.53
  4. Step 4: Simplify right side
    396,348.42x = 155,256,855,381.53
  5. Step 5: Solve for x
    x = 155,256,855,381.53/396,348.42
  6. Step 6: Final answer
    x = 391,718.11

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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.