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Finding the Fourth Proportional to 422,220.96, 632,780.64 and 322,014.24

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Solution

The fourth proportional to 422,220.96, 632,780.64 and 322,014.24 is: 482,601.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,220.96 : 632,780.64 = 322,014.24 : x
  2. Step 2: Convert to fraction form
    422,220.96/632,780.64 = 322,014.24/x
  3. Step 3: Cross multiply
    422,220.96x = 632,780.64 × 322,014.24
  4. Step 4: Simplify right side
    422,220.96x = 203,764,376,876.31
  5. Step 5: Solve for x
    x = 203,764,376,876.31/422,220.96
  6. Step 6: Final answer
    x = 482,601.28

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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.