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Finding the Fourth Proportional to 245,781.48, 368,692.11 and 68,288.51

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Solution

The fourth proportional to 245,781.48, 368,692.11 and 68,288.51 is: 102,438.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,781.48 : 368,692.11 = 68,288.51 : x
  2. Step 2: Convert to fraction form
    245,781.48/368,692.11 = 68,288.51/x
  3. Step 3: Cross multiply
    245,781.48x = 368,692.11 × 68,288.51
  4. Step 4: Simplify right side
    245,781.48x = 25,177,432,997.20
  5. Step 5: Solve for x
    x = 25,177,432,997.20/245,781.48
  6. Step 6: Final answer
    x = 102,438.28

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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.