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Finding the Fourth Proportional to 248,338.54, 342,669.07 and 139,448.52

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Solution

The fourth proportional to 248,338.54, 342,669.07 and 139,448.52 is: 192,417.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,338.54 : 342,669.07 = 139,448.52 : x
  2. Step 2: Convert to fraction form
    248,338.54/342,669.07 = 139,448.52/x
  3. Step 3: Cross multiply
    248,338.54x = 342,669.07 × 139,448.52
  4. Step 4: Simplify right side
    248,338.54x = 47,784,694,661.28
  5. Step 5: Solve for x
    x = 47,784,694,661.28/248,338.54
  6. Step 6: Final answer
    x = 192,417.55

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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.