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Finding the Fourth Proportional to 321,972.20, 451,694.20 and 321,972.20

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Solution

The fourth proportional to 321,972.20, 451,694.20 and 321,972.20 is: 451,694.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,972.20 : 451,694.20 = 321,972.20 : x
  2. Step 2: Convert to fraction form
    321,972.20/451,694.20 = 321,972.20/x
  3. Step 3: Cross multiply
    321,972.20x = 451,694.20 × 321,972.20
  4. Step 4: Simplify right side
    321,972.20x = 145,432,975,301.24
  5. Step 5: Solve for x
    x = 145,432,975,301.24/321,972.20
  6. Step 6: Final answer
    x = 451,694.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.