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Finding the Fourth Proportional to 245,281.20, 367,630.20 and 220,203.60

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Solution

The fourth proportional to 245,281.20, 367,630.20 and 220,203.60 is: 330,043.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,281.20 : 367,630.20 = 220,203.60 : x
  2. Step 2: Convert to fraction form
    245,281.20/367,630.20 = 220,203.60/x
  3. Step 3: Cross multiply
    245,281.20x = 367,630.20 × 220,203.60
  4. Step 4: Simplify right side
    245,281.20x = 80,953,493,508.72
  5. Step 5: Solve for x
    x = 80,953,493,508.72/245,281.20
  6. Step 6: Final answer
    x = 330,043.61

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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.