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Finding the Fourth Proportional to 374,745.20, 517,003.11 and 238,754.79

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Solution

The fourth proportional to 374,745.20, 517,003.11 and 238,754.79 is: 329,389.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,745.20 : 517,003.11 = 238,754.79 : x
  2. Step 2: Convert to fraction form
    374,745.20/517,003.11 = 238,754.79/x
  3. Step 3: Cross multiply
    374,745.20x = 517,003.11 × 238,754.79
  4. Step 4: Simplify right side
    374,745.20x = 123,436,968,957.40
  5. Step 5: Solve for x
    x = 123,436,968,957.40/374,745.20
  6. Step 6: Final answer
    x = 329,389.06

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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.