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Finding the Fourth Proportional to 251,646.96, 347,271.12 and 138,469.44

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Solution

The fourth proportional to 251,646.96, 347,271.12 and 138,469.44 is: 191,086.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,646.96 : 347,271.12 = 138,469.44 : x
  2. Step 2: Convert to fraction form
    251,646.96/347,271.12 = 138,469.44/x
  3. Step 3: Cross multiply
    251,646.96x = 347,271.12 × 138,469.44
  4. Step 4: Simplify right side
    251,646.96x = 48,086,437,514.57
  5. Step 5: Solve for x
    x = 48,086,437,514.57/251,646.96
  6. Step 6: Final answer
    x = 191,086.90

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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.