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Finding the Fourth Proportional to 664,022.80, 995,904.60 and 220,790.80

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Solution

The fourth proportional to 664,022.80, 995,904.60 and 220,790.80 is: 331,143.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,022.80 : 995,904.60 = 220,790.80 : x
  2. Step 2: Convert to fraction form
    664,022.80/995,904.60 = 220,790.80/x
  3. Step 3: Cross multiply
    664,022.80x = 995,904.60 × 220,790.80
  4. Step 4: Simplify right side
    664,022.80x = 219,886,573,357.68
  5. Step 5: Solve for x
    x = 219,886,573,357.68/664,022.80
  6. Step 6: Final answer
    x = 331,143.11

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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.