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Finding the Fourth Proportional to 251,676.92, 347,314.22 and 138,499.67

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Solution

The fourth proportional to 251,676.92, 347,314.22 and 138,499.67 is: 191,129.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,676.92 : 347,314.22 = 138,499.67 : x
  2. Step 2: Convert to fraction form
    251,676.92/347,314.22 = 138,499.67/x
  3. Step 3: Cross multiply
    251,676.92x = 347,314.22 × 138,499.67
  4. Step 4: Simplify right side
    251,676.92x = 48,102,905,032.09
  5. Step 5: Solve for x
    x = 48,102,905,032.09/251,676.92
  6. Step 6: Final answer
    x = 191,129.58

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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.