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Finding the Fourth Proportional to 323,641.36, 485,148.57 and 123,807.88

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Solution

The fourth proportional to 323,641.36, 485,148.57 and 123,807.88 is: 185,591.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,641.36 : 485,148.57 = 123,807.88 : x
  2. Step 2: Convert to fraction form
    323,641.36/485,148.57 = 123,807.88/x
  3. Step 3: Cross multiply
    323,641.36x = 485,148.57 × 123,807.88
  4. Step 4: Simplify right side
    323,641.36x = 60,065,215,936.73
  5. Step 5: Solve for x
    x = 60,065,215,936.73/323,641.36
  6. Step 6: Final answer
    x = 185,591.90

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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.