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Finding the Fourth Proportional to 396,446.63, 547,550.45 and 261,085.60

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Solution

The fourth proportional to 396,446.63, 547,550.45 and 261,085.60 is: 360,597.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,446.63 : 547,550.45 = 261,085.60 : x
  2. Step 2: Convert to fraction form
    396,446.63/547,550.45 = 261,085.60/x
  3. Step 3: Cross multiply
    396,446.63x = 547,550.45 × 261,085.60
  4. Step 4: Simplify right side
    396,446.63x = 142,957,537,768.52
  5. Step 5: Solve for x
    x = 142,957,537,768.52/396,446.63
  6. Step 6: Final answer
    x = 360,597.18

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1.5x scale

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.