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Finding the Fourth Proportional to 245,297.10, 367,945.65 and 76,830.60

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Solution

The fourth proportional to 245,297.10, 367,945.65 and 76,830.60 is: 115,245.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,297.10 : 367,945.65 = 76,830.60 : x
  2. Step 2: Convert to fraction form
    245,297.10/367,945.65 = 76,830.60/x
  3. Step 3: Cross multiply
    245,297.10x = 367,945.65 × 76,830.60
  4. Step 4: Simplify right side
    245,297.10x = 28,269,485,056.89
  5. Step 5: Solve for x
    x = 28,269,485,056.89/245,297.10
  6. Step 6: Final answer
    x = 115,245.90

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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.