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Finding the Fourth Proportional to 252,112.72, 347,911 and 137,392.36

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Solution

The fourth proportional to 252,112.72, 347,911 and 137,392.36 is: 189,598.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,112.72 : 347,911 = 137,392.36 : x
  2. Step 2: Convert to fraction form
    252,112.72/347,911 = 137,392.36/x
  3. Step 3: Cross multiply
    252,112.72x = 347,911 × 137,392.36
  4. Step 4: Simplify right side
    252,112.72x = 47,800,313,359.96
  5. Step 5: Solve for x
    x = 47,800,313,359.96/252,112.72
  6. Step 6: Final answer
    x = 189,598.98

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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.