Home / 285,460.87-428,201.03-135,623.83

Finding the Fourth Proportional to 285,460.87, 428,201.03 and 135,623.83

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Solution

The fourth proportional to 285,460.87, 428,201.03 and 135,623.83 is: 203,440.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,460.87 : 428,201.03 = 135,623.83 : x
  2. Step 2: Convert to fraction form
    285,460.87/428,201.03 = 135,623.83/x
  3. Step 3: Cross multiply
    285,460.87x = 428,201.03 × 135,623.83
  4. Step 4: Simplify right side
    285,460.87x = 58,074,263,698.54
  5. Step 5: Solve for x
    x = 58,074,263,698.54/285,460.87
  6. Step 6: Final answer
    x = 203,440.37

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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.