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Finding the Fourth Proportional to 323,956.14, 485,945.60 and 87,304.47

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Solution

The fourth proportional to 323,956.14, 485,945.60 and 87,304.47 is: 130,959.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,956.14 : 485,945.60 = 87,304.47 : x
  2. Step 2: Convert to fraction form
    323,956.14/485,945.60 = 87,304.47/x
  3. Step 3: Cross multiply
    323,956.14x = 485,945.60 × 87,304.47
  4. Step 4: Simplify right side
    323,956.14x = 42,425,222,620.31
  5. Step 5: Solve for x
    x = 42,425,222,620.31/323,956.14
  6. Step 6: Final answer
    x = 130,959.77

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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.