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Finding the Fourth Proportional to 343,905.68, 515,961 and 164,126.12

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Solution

The fourth proportional to 343,905.68, 515,961 and 164,126.12 is: 246,238.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,905.68 : 515,961 = 164,126.12 : x
  2. Step 2: Convert to fraction form
    343,905.68/515,961 = 164,126.12/x
  3. Step 3: Cross multiply
    343,905.68x = 515,961 × 164,126.12
  4. Step 4: Simplify right side
    343,905.68x = 84,682,677,001.32
  5. Step 5: Solve for x
    x = 84,682,677,001.32/343,905.68
  6. Step 6: Final answer
    x = 246,238.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.