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Finding the Fourth Proportional to 251,951.79, 347,693.46 and 138,774.54

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Solution

The fourth proportional to 251,951.79, 347,693.46 and 138,774.54 is: 191,508.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,951.79 : 347,693.46 = 138,774.54 : x
  2. Step 2: Convert to fraction form
    251,951.79/347,693.46 = 138,774.54/x
  3. Step 3: Cross multiply
    251,951.79x = 347,693.46 × 138,774.54
  4. Step 4: Simplify right side
    251,951.79x = 48,250,999,972.51
  5. Step 5: Solve for x
    x = 48,250,999,972.51/251,951.79
  6. Step 6: Final answer
    x = 191,508.86

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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.