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Finding the Fourth Proportional to 443,886.36, 612,563.20 and 239,936.61

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Solution

The fourth proportional to 443,886.36, 612,563.20 and 239,936.61 is: 331,112.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,886.36 : 612,563.20 = 239,936.61 : x
  2. Step 2: Convert to fraction form
    443,886.36/612,563.20 = 239,936.61/x
  3. Step 3: Cross multiply
    443,886.36x = 612,563.20 × 239,936.61
  4. Step 4: Simplify right side
    443,886.36x = 146,976,336,419.07
  5. Step 5: Solve for x
    x = 146,976,336,419.07/443,886.36
  6. Step 6: Final answer
    x = 331,112.53

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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.