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Finding the Fourth Proportional to 251,745.06, 347,408.28 and 138,567

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Solution

The fourth proportional to 251,745.06, 347,408.28 and 138,567 is: 191,222.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,745.06 : 347,408.28 = 138,567 : x
  2. Step 2: Convert to fraction form
    251,745.06/347,408.28 = 138,567/x
  3. Step 3: Cross multiply
    251,745.06x = 347,408.28 × 138,567
  4. Step 4: Simplify right side
    251,745.06x = 48,139,323,134.76
  5. Step 5: Solve for x
    x = 48,139,323,134.76/251,745.06
  6. Step 6: Final answer
    x = 191,222.51

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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.