Home / 405,976.38-609,022.92-125,515.50

Finding the Fourth Proportional to 405,976.38, 609,022.92 and 125,515.50

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Solution

The fourth proportional to 405,976.38, 609,022.92 and 125,515.50 is: 188,291.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,976.38 : 609,022.92 = 125,515.50 : x
  2. Step 2: Convert to fraction form
    405,976.38/609,022.92 = 125,515.50/x
  3. Step 3: Cross multiply
    405,976.38x = 609,022.92 × 125,515.50
  4. Step 4: Simplify right side
    405,976.38x = 76,441,816,315.26
  5. Step 5: Solve for x
    x = 76,441,816,315.26/405,976.38
  6. Step 6: Final answer
    x = 188,291.29

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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.