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Finding the Fourth Proportional to 242,652.40, 363,978.60 and 220,879.60

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Solution

The fourth proportional to 242,652.40, 363,978.60 and 220,879.60 is: 331,319.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,652.40 : 363,978.60 = 220,879.60 : x
  2. Step 2: Convert to fraction form
    242,652.40/363,978.60 = 220,879.60/x
  3. Step 3: Cross multiply
    242,652.40x = 363,978.60 × 220,879.60
  4. Step 4: Simplify right side
    242,652.40x = 80,395,447,576.56
  5. Step 5: Solve for x
    x = 80,395,447,576.56/242,652.40
  6. Step 6: Final answer
    x = 331,319.40

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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.