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Finding the Fourth Proportional to 252,611, 348,603.21 and 139,433.78

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Solution

The fourth proportional to 252,611, 348,603.21 and 139,433.78 is: 192,418.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,611 : 348,603.21 = 139,433.78 : x
  2. Step 2: Convert to fraction form
    252,611/348,603.21 = 139,433.78/x
  3. Step 3: Cross multiply
    252,611x = 348,603.21 × 139,433.78
  4. Step 4: Simplify right side
    252,611x = 48,607,063,290.43
  5. Step 5: Solve for x
    x = 48,607,063,290.43/252,611
  6. Step 6: Final answer
    x = 192,418.63

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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.