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Finding the Fourth Proportional to 305,813.59, 422,008.43 and 169,855.83

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Solution

The fourth proportional to 305,813.59, 422,008.43 and 169,855.83 is: 234,393.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,813.59 : 422,008.43 = 169,855.83 : x
  2. Step 2: Convert to fraction form
    305,813.59/422,008.43 = 169,855.83/x
  3. Step 3: Cross multiply
    305,813.59x = 422,008.43 × 169,855.83
  4. Step 4: Simplify right side
    305,813.59x = 71,680,591,295.37
  5. Step 5: Solve for x
    x = 71,680,591,295.37/305,813.59
  6. Step 6: Final answer
    x = 234,393.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.