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Finding the Fourth Proportional to 251,132.40, 376,698.60 and 213,078.60

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Solution

The fourth proportional to 251,132.40, 376,698.60 and 213,078.60 is: 319,617.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,132.40 : 376,698.60 = 213,078.60 : x
  2. Step 2: Convert to fraction form
    251,132.40/376,698.60 = 213,078.60/x
  3. Step 3: Cross multiply
    251,132.40x = 376,698.60 × 213,078.60
  4. Step 4: Simplify right side
    251,132.40x = 80,266,410,309.96
  5. Step 5: Solve for x
    x = 80,266,410,309.96/251,132.40
  6. Step 6: Final answer
    x = 319,617.90

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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.