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Finding the Fourth Proportional to 251,679.69, 347,318.03 and 138,502.44

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Solution

The fourth proportional to 251,679.69, 347,318.03 and 138,502.44 is: 191,133.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,679.69 : 347,318.03 = 138,502.44 : x
  2. Step 2: Convert to fraction form
    251,679.69/347,318.03 = 138,502.44/x
  3. Step 3: Cross multiply
    251,679.69x = 347,318.03 × 138,502.44
  4. Step 4: Simplify right side
    251,679.69x = 48,104,394,610.99
  5. Step 5: Solve for x
    x = 48,104,394,610.99/251,679.69
  6. Step 6: Final answer
    x = 191,133.40

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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.