Home / 494,919.20-742,305.90-139,969.10

Finding the Fourth Proportional to 494,919.20, 742,305.90 and 139,969.10

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Solution

The fourth proportional to 494,919.20, 742,305.90 and 139,969.10 is: 209,933.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,919.20 : 742,305.90 = 139,969.10 : x
  2. Step 2: Convert to fraction form
    494,919.20/742,305.90 = 139,969.10/x
  3. Step 3: Cross multiply
    494,919.20x = 742,305.90 × 139,969.10
  4. Step 4: Simplify right side
    494,919.20x = 103,899,888,747.69
  5. Step 5: Solve for x
    x = 103,899,888,747.69/494,919.20
  6. Step 6: Final answer
    x = 209,933.03

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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.