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Finding the Fourth Proportional to 251,885.44, 347,604.24 and 138,709

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Solution

The fourth proportional to 251,885.44, 347,604.24 and 138,709 is: 191,419.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,885.44 : 347,604.24 = 138,709 : x
  2. Step 2: Convert to fraction form
    251,885.44/347,604.24 = 138,709/x
  3. Step 3: Cross multiply
    251,885.44x = 347,604.24 × 138,709
  4. Step 4: Simplify right side
    251,885.44x = 48,215,836,526.16
  5. Step 5: Solve for x
    x = 48,215,836,526.16/251,885.44
  6. Step 6: Final answer
    x = 191,419.70

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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.