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Finding the Fourth Proportional to 301,140.28, 450,921.30 and 211,910.68

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Solution

The fourth proportional to 301,140.28, 450,921.30 and 211,910.68 is: 317,310.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,140.28 : 450,921.30 = 211,910.68 : x
  2. Step 2: Convert to fraction form
    301,140.28/450,921.30 = 211,910.68/x
  3. Step 3: Cross multiply
    301,140.28x = 450,921.30 × 211,910.68
  4. Step 4: Simplify right side
    301,140.28x = 95,555,039,309.48
  5. Step 5: Solve for x
    x = 95,555,039,309.48/301,140.28
  6. Step 6: Final answer
    x = 317,310.72

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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.