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Finding the Fourth Proportional to 245,667.78, 368,501.70 and 68,174.85

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Solution

The fourth proportional to 245,667.78, 368,501.70 and 68,174.85 is: 102,262.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,667.78 : 368,501.70 = 68,174.85 : x
  2. Step 2: Convert to fraction form
    245,667.78/368,501.70 = 68,174.85/x
  3. Step 3: Cross multiply
    245,667.78x = 368,501.70 × 68,174.85
  4. Step 4: Simplify right side
    245,667.78x = 25,122,548,122.25
  5. Step 5: Solve for x
    x = 25,122,548,122.25/245,667.78
  6. Step 6: Final answer
    x = 102,262.28

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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.