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Finding the Fourth Proportional to 323,624.36, 485,443.45 and 83,743.42

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Solution

The fourth proportional to 323,624.36, 485,443.45 and 83,743.42 is: 125,616.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,624.36 : 485,443.45 = 83,743.42 : x
  2. Step 2: Convert to fraction form
    323,624.36/485,443.45 = 83,743.42/x
  3. Step 3: Cross multiply
    323,624.36x = 485,443.45 × 83,743.42
  4. Step 4: Simplify right side
    323,624.36x = 40,652,693,505.99
  5. Step 5: Solve for x
    x = 40,652,693,505.99/323,624.36
  6. Step 6: Final answer
    x = 125,616.91

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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.