Home / 492,786.20-739,179.30-118,809.20

Finding the Fourth Proportional to 492,786.20, 739,179.30 and 118,809.20

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Solution

The fourth proportional to 492,786.20, 739,179.30 and 118,809.20 is: 178,213.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,786.20 : 739,179.30 = 118,809.20 : x
  2. Step 2: Convert to fraction form
    492,786.20/739,179.30 = 118,809.20/x
  3. Step 3: Cross multiply
    492,786.20x = 739,179.30 × 118,809.20
  4. Step 4: Simplify right side
    492,786.20x = 87,821,301,289.56
  5. Step 5: Solve for x
    x = 87,821,301,289.56/492,786.20
  6. Step 6: Final answer
    x = 178,213.80

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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.