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Finding the Fourth Proportional to 248,553.03, 343,003.86 and 135,375.78

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Solution

The fourth proportional to 248,553.03, 343,003.86 and 135,375.78 is: 186,818.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,553.03 : 343,003.86 = 135,375.78 : x
  2. Step 2: Convert to fraction form
    248,553.03/343,003.86 = 135,375.78/x
  3. Step 3: Cross multiply
    248,553.03x = 343,003.86 × 135,375.78
  4. Step 4: Simplify right side
    248,553.03x = 46,434,415,090.51
  5. Step 5: Solve for x
    x = 46,434,415,090.51/248,553.03
  6. Step 6: Final answer
    x = 186,818.95

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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.