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Finding the Fourth Proportional to 347,563.10, 479,228.42 and 278,597.42

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Solution

The fourth proportional to 347,563.10, 479,228.42 and 278,597.42 is: 384,136.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,563.10 : 479,228.42 = 278,597.42 : x
  2. Step 2: Convert to fraction form
    347,563.10/479,228.42 = 278,597.42/x
  3. Step 3: Cross multiply
    347,563.10x = 479,228.42 × 278,597.42
  4. Step 4: Simplify right side
    347,563.10x = 133,511,797,613.55
  5. Step 5: Solve for x
    x = 133,511,797,613.55/347,563.10
  6. Step 6: Final answer
    x = 384,136.86

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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.