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Finding the Fourth Proportional to 380,791.70, 570,279.60 and 220,529.02

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Solution

The fourth proportional to 380,791.70, 570,279.60 and 220,529.02 is: 330,267.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,791.70 : 570,279.60 = 220,529.02 : x
  2. Step 2: Convert to fraction form
    380,791.70/570,279.60 = 220,529.02/x
  3. Step 3: Cross multiply
    380,791.70x = 570,279.60 × 220,529.02
  4. Step 4: Simplify right side
    380,791.70x = 125,763,201,313.99
  5. Step 5: Solve for x
    x = 125,763,201,313.99/380,791.70
  6. Step 6: Final answer
    x = 330,267.71

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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.