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Finding the Fourth Proportional to 378,692.62, 522,641.76 and 276,667.02

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Solution

The fourth proportional to 378,692.62, 522,641.76 and 276,667.02 is: 381,834.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,692.62 : 522,641.76 = 276,667.02 : x
  2. Step 2: Convert to fraction form
    378,692.62/522,641.76 = 276,667.02/x
  3. Step 3: Cross multiply
    378,692.62x = 522,641.76 × 276,667.02
  4. Step 4: Simplify right side
    378,692.62x = 144,597,740,226.66
  5. Step 5: Solve for x
    x = 144,597,740,226.66/378,692.62
  6. Step 6: Final answer
    x = 381,834.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.