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Finding the Fourth Proportional to 251,793.81, 347,476.77 and 138,616.56

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Solution

The fourth proportional to 251,793.81, 347,476.77 and 138,616.56 is: 191,291.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,793.81 : 347,476.77 = 138,616.56 : x
  2. Step 2: Convert to fraction form
    251,793.81/347,476.77 = 138,616.56/x
  3. Step 3: Cross multiply
    251,793.81x = 347,476.77 × 138,616.56
  4. Step 4: Simplify right side
    251,793.81x = 48,166,034,537.31
  5. Step 5: Solve for x
    x = 48,166,034,537.31/251,793.81
  6. Step 6: Final answer
    x = 191,291.58

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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.