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Finding the Fourth Proportional to 492,291.38, 679,362.11 and 265,936.88

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Solution

The fourth proportional to 492,291.38, 679,362.11 and 265,936.88 is: 366,992.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,291.38 : 679,362.11 = 265,936.88 : x
  2. Step 2: Convert to fraction form
    492,291.38/679,362.11 = 265,936.88/x
  3. Step 3: Cross multiply
    492,291.38x = 679,362.11 × 265,936.88
  4. Step 4: Simplify right side
    492,291.38x = 180,667,435,197.12
  5. Step 5: Solve for x
    x = 180,667,435,197.12/492,291.38
  6. Step 6: Final answer
    x = 366,992.89

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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.