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Finding the Fourth Proportional to 245,299.20, 367,657.20 and 220,221.60

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Solution

The fourth proportional to 245,299.20, 367,657.20 and 220,221.60 is: 330,070.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,299.20 : 367,657.20 = 220,221.60 : x
  2. Step 2: Convert to fraction form
    245,299.20/367,657.20 = 220,221.60/x
  3. Step 3: Cross multiply
    245,299.20x = 367,657.20 × 220,221.60
  4. Step 4: Simplify right side
    245,299.20x = 80,966,056,835.52
  5. Step 5: Solve for x
    x = 80,966,056,835.52/245,299.20
  6. Step 6: Final answer
    x = 330,070.61

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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.