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Finding the Fourth Proportional to 321,509.20, 482,165.30 and 222,306.88

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Solution

The fourth proportional to 321,509.20, 482,165.30 and 222,306.88 is: 333,392.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,509.20 : 482,165.30 = 222,306.88 : x
  2. Step 2: Convert to fraction form
    321,509.20/482,165.30 = 222,306.88/x
  3. Step 3: Cross multiply
    321,509.20x = 482,165.30 × 222,306.88
  4. Step 4: Simplify right side
    321,509.20x = 107,188,663,487.26
  5. Step 5: Solve for x
    x = 107,188,663,487.26/321,509.20
  6. Step 6: Final answer
    x = 333,392.21

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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.