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Finding the Fourth Proportional to 321,080.72, 481,638.36 and 133,903.76

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Solution

The fourth proportional to 321,080.72, 481,638.36 and 133,903.76 is: 200,862.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,080.72 : 481,638.36 = 133,903.76 : x
  2. Step 2: Convert to fraction form
    321,080.72/481,638.36 = 133,903.76/x
  3. Step 3: Cross multiply
    321,080.72x = 481,638.36 × 133,903.76
  4. Step 4: Simplify right side
    321,080.72x = 64,493,187,364.23
  5. Step 5: Solve for x
    x = 64,493,187,364.23/321,080.72
  6. Step 6: Final answer
    x = 200,862.85

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1.5x scale

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.