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Finding the Fourth Proportional to 252,112, 347,914.56 and 138,945.28

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Solution

The fourth proportional to 252,112, 347,914.56 and 138,945.28 is: 191,744.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,112 : 347,914.56 = 138,945.28 : x
  2. Step 2: Convert to fraction form
    252,112/347,914.56 = 138,945.28/x
  3. Step 3: Cross multiply
    252,112x = 347,914.56 × 138,945.28
  4. Step 4: Simplify right side
    252,112x = 48,341,085,955.28
  5. Step 5: Solve for x
    x = 48,341,085,955.28/252,112
  6. Step 6: Final answer
    x = 191,744.49

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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.