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Finding the Fourth Proportional to 664,416.60, 996,770.24 and 215,182.88

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Solution

The fourth proportional to 664,416.60, 996,770.24 and 215,182.88 is: 322,821.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,416.60 : 996,770.24 = 215,182.88 : x
  2. Step 2: Convert to fraction form
    664,416.60/996,770.24 = 215,182.88/x
  3. Step 3: Cross multiply
    664,416.60x = 996,770.24 × 215,182.88
  4. Step 4: Simplify right side
    664,416.60x = 214,487,890,636.95
  5. Step 5: Solve for x
    x = 214,487,890,636.95/664,416.60
  6. Step 6: Final answer
    x = 322,821.39

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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.