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Finding the Fourth Proportional to 248,996.75, 343,616.61 and 135,821.93

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Solution

The fourth proportional to 248,996.75, 343,616.61 and 135,821.93 is: 187,434.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,996.75 : 343,616.61 = 135,821.93 : x
  2. Step 2: Convert to fraction form
    248,996.75/343,616.61 = 135,821.93/x
  3. Step 3: Cross multiply
    248,996.75x = 343,616.61 × 135,821.93
  4. Step 4: Simplify right side
    248,996.75x = 46,670,671,150.26
  5. Step 5: Solve for x
    x = 46,670,671,150.26/248,996.75
  6. Step 6: Final answer
    x = 187,434.86

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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.