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Finding the Fourth Proportional to 378,021.60, 567,032.40 and 218,589.30

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Solution

The fourth proportional to 378,021.60, 567,032.40 and 218,589.30 is: 327,883.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,021.60 : 567,032.40 = 218,589.30 : x
  2. Step 2: Convert to fraction form
    378,021.60/567,032.40 = 218,589.30/x
  3. Step 3: Cross multiply
    378,021.60x = 567,032.40 × 218,589.30
  4. Step 4: Simplify right side
    378,021.60x = 123,947,215,393.32
  5. Step 5: Solve for x
    x = 123,947,215,393.32/378,021.60
  6. Step 6: Final answer
    x = 327,883.95

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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.