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Finding the Fourth Proportional to 378,034.20, 567,051.30 and 141,327.90

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Solution

The fourth proportional to 378,034.20, 567,051.30 and 141,327.90 is: 211,991.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,034.20 : 567,051.30 = 141,327.90 : x
  2. Step 2: Convert to fraction form
    378,034.20/567,051.30 = 141,327.90/x
  3. Step 3: Cross multiply
    378,034.20x = 567,051.30 × 141,327.90
  4. Step 4: Simplify right side
    378,034.20x = 80,140,169,421.27
  5. Step 5: Solve for x
    x = 80,140,169,421.27/378,034.20
  6. Step 6: Final answer
    x = 211,991.85

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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.