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Finding the Fourth Proportional to 252,854.72, 348,934.56 and 139,676.48

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Solution

The fourth proportional to 252,854.72, 348,934.56 and 139,676.48 is: 192,750.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,854.72 : 348,934.56 = 139,676.48 : x
  2. Step 2: Convert to fraction form
    252,854.72/348,934.56 = 139,676.48/x
  3. Step 3: Cross multiply
    252,854.72x = 348,934.56 × 139,676.48
  4. Step 4: Simplify right side
    252,854.72x = 48,737,951,091.15
  5. Step 5: Solve for x
    x = 48,737,951,091.15/252,854.72
  6. Step 6: Final answer
    x = 192,750.81

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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.