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Finding the Fourth Proportional to 252,068.68, 347,852.56 and 138,890.60

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Solution

The fourth proportional to 252,068.68, 347,852.56 and 138,890.60 is: 191,667.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,068.68 : 347,852.56 = 138,890.60 : x
  2. Step 2: Convert to fraction form
    252,068.68/347,852.56 = 138,890.60/x
  3. Step 3: Cross multiply
    252,068.68x = 347,852.56 × 138,890.60
  4. Step 4: Simplify right side
    252,068.68x = 48,313,450,769.94
  5. Step 5: Solve for x
    x = 48,313,450,769.94/252,068.68
  6. Step 6: Final answer
    x = 191,667.81

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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.