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Finding the Fourth Proportional to 300,222.72, 450,332.87 and 120,388.55

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Solution

The fourth proportional to 300,222.72, 450,332.87 and 120,388.55 is: 180,582.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,222.72 : 450,332.87 = 120,388.55 : x
  2. Step 2: Convert to fraction form
    300,222.72/450,332.87 = 120,388.55/x
  3. Step 3: Cross multiply
    300,222.72x = 450,332.87 × 120,388.55
  4. Step 4: Simplify right side
    300,222.72x = 54,214,918,383.03
  5. Step 5: Solve for x
    x = 54,214,918,383.03/300,222.72
  6. Step 6: Final answer
    x = 180,582.33

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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.