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Finding the Fourth Proportional to 248,323.54, 342,722.60 and 139,440.10

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Solution

The fourth proportional to 248,323.54, 342,722.60 and 139,440.10 is: 192,447.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,323.54 : 342,722.60 = 139,440.10 : x
  2. Step 2: Convert to fraction form
    248,323.54/342,722.60 = 139,440.10/x
  3. Step 3: Cross multiply
    248,323.54x = 342,722.60 × 139,440.10
  4. Step 4: Simplify right side
    248,323.54x = 47,789,273,616.26
  5. Step 5: Solve for x
    x = 47,789,273,616.26/248,323.54
  6. Step 6: Final answer
    x = 192,447.62

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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.