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Finding the Fourth Proportional to 247,940.70, 372,299.85 and 142,964.70

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Solution

The fourth proportional to 247,940.70, 372,299.85 and 142,964.70 is: 214,671.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,940.70 : 372,299.85 = 142,964.70 : x
  2. Step 2: Convert to fraction form
    247,940.70/372,299.85 = 142,964.70/x
  3. Step 3: Cross multiply
    247,940.70x = 372,299.85 × 142,964.70
  4. Step 4: Simplify right side
    247,940.70x = 53,225,736,365.30
  5. Step 5: Solve for x
    x = 53,225,736,365.30/247,940.70
  6. Step 6: Final answer
    x = 214,671.24

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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.