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Finding the Fourth Proportional to 494,759.22, 742,169.61 and 139,800.48

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Solution

The fourth proportional to 494,759.22, 742,169.61 and 139,800.48 is: 209,709.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,759.22 : 742,169.61 = 139,800.48 : x
  2. Step 2: Convert to fraction form
    494,759.22/742,169.61 = 139,800.48/x
  3. Step 3: Cross multiply
    494,759.22x = 742,169.61 × 139,800.48
  4. Step 4: Simplify right side
    494,759.22x = 103,755,667,719.41
  5. Step 5: Solve for x
    x = 103,755,667,719.41/494,759.22
  6. Step 6: Final answer
    x = 209,709.42

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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.