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Finding the Fourth Proportional to 251,993.45, 347,691.20 and 143,074.10

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Solution

The fourth proportional to 251,993.45, 347,691.20 and 143,074.10 is: 197,408.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,993.45 : 347,691.20 = 143,074.10 : x
  2. Step 2: Convert to fraction form
    251,993.45/347,691.20 = 143,074.10/x
  3. Step 3: Cross multiply
    251,993.45x = 347,691.20 × 143,074.10
  4. Step 4: Simplify right side
    251,993.45x = 49,745,603,064.09
  5. Step 5: Solve for x
    x = 49,745,603,064.09/251,993.45
  6. Step 6: Final answer
    x = 197,408.32

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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.