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Finding the Fourth Proportional to 252,895.60, 348,991.85 and 138,171.78

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Solution

The fourth proportional to 252,895.60, 348,991.85 and 138,171.78 is: 190,674.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,895.60 : 348,991.85 = 138,171.78 : x
  2. Step 2: Convert to fraction form
    252,895.60/348,991.85 = 138,171.78/x
  3. Step 3: Cross multiply
    252,895.60x = 348,991.85 × 138,171.78
  4. Step 4: Simplify right side
    252,895.60x = 48,220,823,375.03
  5. Step 5: Solve for x
    x = 48,220,823,375.03/252,895.60
  6. Step 6: Final answer
    x = 190,674.83

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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.