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Finding the Fourth Proportional to 378,620.60, 567,930.90 and 355,525.88

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Solution

The fourth proportional to 378,620.60, 567,930.90 and 355,525.88 is: 533,288.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,620.60 : 567,930.90 = 355,525.88 : x
  2. Step 2: Convert to fraction form
    378,620.60/567,930.90 = 355,525.88/x
  3. Step 3: Cross multiply
    378,620.60x = 567,930.90 × 355,525.88
  4. Step 4: Simplify right side
    378,620.60x = 201,914,133,001.69
  5. Step 5: Solve for x
    x = 201,914,133,001.69/378,620.60
  6. Step 6: Final answer
    x = 533,288.82

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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.