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Finding the Fourth Proportional to 395,940.70, 593,983.05 and 129,627.10

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Solution

The fourth proportional to 395,940.70, 593,983.05 and 129,627.10 is: 194,464.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,940.70 : 593,983.05 = 129,627.10 : x
  2. Step 2: Convert to fraction form
    395,940.70/593,983.05 = 129,627.10/x
  3. Step 3: Cross multiply
    395,940.70x = 593,983.05 × 129,627.10
  4. Step 4: Simplify right side
    395,940.70x = 76,996,300,220.66
  5. Step 5: Solve for x
    x = 76,996,300,220.66/395,940.70
  6. Step 6: Final answer
    x = 194,464.22

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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.