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Finding the Fourth Proportional to 239,940.47, 360,128.81 and 127,714.56

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Solution

The fourth proportional to 239,940.47, 360,128.81 and 127,714.56 is: 191,687.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,940.47 : 360,128.81 = 127,714.56 : x
  2. Step 2: Convert to fraction form
    239,940.47/360,128.81 = 127,714.56/x
  3. Step 3: Cross multiply
    239,940.47x = 360,128.81 × 127,714.56
  4. Step 4: Simplify right side
    239,940.47x = 45,993,692,512.47
  5. Step 5: Solve for x
    x = 45,993,692,512.47/239,940.47
  6. Step 6: Final answer
    x = 191,687.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.