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Finding the Fourth Proportional to 252,601.68, 348,588.09 and 139,422

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Solution

The fourth proportional to 252,601.68, 348,588.09 and 139,422 is: 192,401.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,601.68 : 348,588.09 = 139,422 : x
  2. Step 2: Convert to fraction form
    252,601.68/348,588.09 = 139,422/x
  3. Step 3: Cross multiply
    252,601.68x = 348,588.09 × 139,422
  4. Step 4: Simplify right side
    252,601.68x = 48,600,848,683.98
  5. Step 5: Solve for x
    x = 48,600,848,683.98/252,601.68
  6. Step 6: Final answer
    x = 192,401.13

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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.