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Finding the Fourth Proportional to 251,906.66, 347,615.44 and 138,729.41

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Solution

The fourth proportional to 251,906.66, 347,615.44 and 138,729.41 is: 191,437.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,906.66 : 347,615.44 = 138,729.41 : x
  2. Step 2: Convert to fraction form
    251,906.66/347,615.44 = 138,729.41/x
  3. Step 3: Cross multiply
    251,906.66x = 347,615.44 × 138,729.41
  4. Step 4: Simplify right side
    251,906.66x = 48,224,484,898.09
  5. Step 5: Solve for x
    x = 48,224,484,898.09/251,906.66
  6. Step 6: Final answer
    x = 191,437.91

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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.