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Finding the Fourth Proportional to 378,022.60, 567,033.90 and 218,590.30

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Solution

The fourth proportional to 378,022.60, 567,033.90 and 218,590.30 is: 327,885.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,022.60 : 567,033.90 = 218,590.30 : x
  2. Step 2: Convert to fraction form
    378,022.60/567,033.90 = 218,590.30/x
  3. Step 3: Cross multiply
    378,022.60x = 567,033.90 × 218,590.30
  4. Step 4: Simplify right side
    378,022.60x = 123,948,110,311.17
  5. Step 5: Solve for x
    x = 123,948,110,311.17/378,022.60
  6. Step 6: Final answer
    x = 327,885.45

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1.5x scale

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.