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Finding the Fourth Proportional to 253,948.39, 350,446.42 and 139,233.41

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Solution

The fourth proportional to 253,948.39, 350,446.42 and 139,233.41 is: 192,140.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,948.39 : 350,446.42 = 139,233.41 : x
  2. Step 2: Convert to fraction form
    253,948.39/350,446.42 = 139,233.41/x
  3. Step 3: Cross multiply
    253,948.39x = 350,446.42 × 139,233.41
  4. Step 4: Simplify right side
    253,948.39x = 48,793,850,078.89
  5. Step 5: Solve for x
    x = 48,793,850,078.89/253,948.39
  6. Step 6: Final answer
    x = 192,140.81

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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.