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Finding the Fourth Proportional to 247,361.74, 341,359.31 and 139,929.49

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Solution

The fourth proportional to 247,361.74, 341,359.31 and 139,929.49 is: 193,102.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,361.74 : 341,359.31 = 139,929.49 : x
  2. Step 2: Convert to fraction form
    247,361.74/341,359.31 = 139,929.49/x
  3. Step 3: Cross multiply
    247,361.74x = 341,359.31 × 139,929.49
  4. Step 4: Simplify right side
    247,361.74x = 47,766,231,748.61
  5. Step 5: Solve for x
    x = 47,766,231,748.61/247,361.74
  6. Step 6: Final answer
    x = 193,102.75

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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.