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Finding the Fourth Proportional to 252,970.04, 349,098.54 and 139,791.80

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Solution

The fourth proportional to 252,970.04, 349,098.54 and 139,791.80 is: 192,912.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,970.04 : 349,098.54 = 139,791.80 : x
  2. Step 2: Convert to fraction form
    252,970.04/349,098.54 = 139,791.80/x
  3. Step 3: Cross multiply
    252,970.04x = 349,098.54 × 139,791.80
  4. Step 4: Simplify right side
    252,970.04x = 48,801,113,283.97
  5. Step 5: Solve for x
    x = 48,801,113,283.97/252,970.04
  6. Step 6: Final answer
    x = 192,912.62

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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.